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 14 inches. The mouse jumped 16 inches lesser than the frog who jumped 37 inches farther than the grasshopper. 

 Question: How much farther did the mouse jump than the grasshopper?
answer:
21


question:
Context: The grasshopper and the frog had a jumping contest. The grasshopper jumped 9 inches and the frog jumped 12 inches. 

 Question: How much farther did the frog jump than the grasshopper?
answer:
3


question:
Context: Mary is baking a cake. The recipe calls for 5 cups of sugar and 13 cups of flour. She already put in some cups of flour. If she still needs 12 more cups of flour 

 Question: How many cups of flour did she put in?
answer:

1