instruction:
You are given a math word problem and you are supposed to only use subtraction on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
Context: The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped 39 inches. The grasshopper jumped 19 inches farther than the frog and the mouse jumped 12 inches lesser than the frog. 

 Question: How far did the mouse jump?
answer:
8


question:
Context: Baker sold 8 cakes. If he had made 40 cakes initially 

 Question: How many more cakes did baker make than those he sold?
answer:
32


question:
Context: David did 40 more push-ups but 17 less crunches than Zachary in gym class today. If Zachary did 34 push-ups and 62 crunches 

 Question: How many crunches did David do?
answer:

45