diff --git a/lingua_franca/lang/parse_en.py b/lingua_franca/lang/parse_en.py
index 58207de..ef0f93d 100644
--- a/lingua_franca/lang/parse_en.py
+++ b/lingua_franca/lang/parse_en.py
@@ -444,7 +444,11 @@ def _extract_whole_number_with_text_en(tokens, short_scale, ordinals):
                 current_val = val
 
         else:
-            if prev_word in _SUMS and word not in _SUMS and current_val >= 10:
+            if all([
+                prev_word in _SUMS,
+                word not in _SUMS,
+                word not in multiplies,
+                current_val >= 10]):
                 # Backtrack - we've got numbers we can't sum.
                 number_words.pop()
                 val = prev_val

Multiples of ten describing other multiples of ten require an intermediary number. I.e "twenty thousand" doesn't work
"twenty thousand" returns "20". The only way I have found to get this sort of situation to work is to add an extra number. "twenty four thousand" properly returns "24000".
diff --git a/test/test_parse.py b/test/test_parse.py
index 01aec52..f5718ae 100644
--- a/test/test_parse.py
+++ b/test/test_parse.py
@@ -123,6 +123,18 @@ class TestNormalize(unittest.TestCase):
                                         short_scale=False), 1e12)
         self.assertEqual(extract_number("this is the billionth test",
                                         short_scale=False), 1e-12)
+
+        # Verify non-power multiples of ten no longer discard
+        # adjacent multipliers
+        self.assertEqual(extract_number("twenty thousand"), 20000)
+        self.assertEqual(extract_number("fifty million"), 50000000)
+
+        # This test fails due to 
+        # self.assertEqual(extract_number("twenty billion three hundred million \
+        #                                 nine hundred fifty thousand six hundred \
+        #                                 seventy five point eight six"),
+        #                                 20300950675.86)
+
         # TODO handle this case
         # self.assertEqual(
         #    extract_number("6 dot six six six"),

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest
3.7
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
certifi @ file:///croot/certifi_1671487769961/work/certifi
exceptiongroup==1.2.2
importlib-metadata==6.7.0
iniconfig==2.0.0
-e git+https://github.com/MycroftAI/lingua-franca.git@5ac3a86f1b5d1f2f97722ecb14408411a0fc663f#egg=lingua_franca
packaging==24.0
pluggy==1.2.0
pytest==7.4.4
python-dateutil==2.6.0
six==1.17.0
tomli==2.0.1
typing_extensions==4.7.1
zipp==3.15.0

name: lingua-franca
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=22.3.1=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - exceptiongroup==1.2.2
      - importlib-metadata==6.7.0
      - iniconfig==2.0.0
      - packaging==24.0
      - pluggy==1.2.0
      - pytest==7.4.4
      - python-dateutil==2.6.0
      - six==1.17.0
      - tomli==2.0.1
      - typing-extensions==4.7.1
      - zipp==3.15.0
prefix: /opt/conda/envs/lingua-franca

test/test_parse.py::TestNormalize::test_extract_number
test/test_parse.py::TestFuzzyMatch::test_match_one test/test_parse.py::TestFuzzyMatch::test_matches test/test_parse.py::TestNormalize::test_articles test/test_parse.py::TestNormalize::test_combinations test/test_parse.py::TestNormalize::test_contractions test/test_parse.py::TestNormalize::test_extract_ambiguous_time_en test/test_parse.py::TestNormalize::test_extract_date_with_may_I_en test/test_parse.py::TestNormalize::test_extract_duration_en test/test_parse.py::TestNormalize::test_extract_relativedatetime_en test/test_parse.py::TestNormalize::test_extractdatetime_en test/test_parse.py::TestNormalize::test_gender test/test_parse.py::TestNormalize::test_multiple_numbers test/test_parse.py::TestNormalize::test_numbers test/test_parse.py::TestNormalize::test_spaces
lingua_franca/lang/parse_en.py
lingua_franca/lang/parse_en.py