CREATE TABLE table_name_50 (body_width_mm VARCHAR2, body_length_mm VARCHAR2, pins VARCHAR2)

How much Body Width/mm has a Body Length/mm of 18.4, and Pins of 40?
SELECT COUNT(body_width_mm) FROM table_name_50 WHERE body_length_mm = 18.4 AND pins = "40"
SELECT COUNT("body_width_mm") FROM "table_name_50" WHERE "40" = "pins" AND "body_length_mm" = 18.4