You are given a math word problem and you are supposed to only use multiplication or division operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Q: Context: There are 20 houses in a block. If a mailman has to give 32 pieces of junk mail to each house in each block 

 Question: How many pieces of junk mail should he give each block?
A: 
640