Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How much Body Width/mm has a Part Number of tsop40/44, and a Body Length/mm smaller than 18.42?

### Inputs:
table_name: table, columns: ['Part Number', 'Pins', 'Body Width/mm', 'Body Length/mm', 'Lead Pitch/mm']

### Response:
SELECT SUM Body Width/mm FROM table WHERE Part Number = tsop40/44 AND Body Length/mm < 18.42