CREATE TABLE table_63278 ("Part Number" CLOB, "Pins" CLOB, "Body Width/mm" FLOAT, "Body Length/mm" FLOAT, "Lead Pitch/mm" FLOAT)

How much Body Width/mm has a Part Number of tsop40/44, and a Body Length/mm smaller than 18.42?
SELECT SUM("Body Width/mm") FROM table_63278 WHERE "Part Number" = 'tsop40/44' AND "Body Length/mm" < '18.42'
SELECT SUM("Body Width/mm") FROM "table_63278" WHERE "Body Length/mm" < '18.42' AND "Part Number" = 'tsop40/44'