You are given a math word problem and you are supposed to apply an addition mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Context: Zachary did 44 push-ups in gym class today. David did 58 more push-ups than zachary. 

 Question: How many push-ups did Zachary and David do altogether?
[EX A]: 146

[EX Q]: Context: The grasshopper, the frog and the mouse had a jumping contest. The grasshopper jumped 36 inches. The frog jumped 17 inches farther than the grasshopper and the mouse jumped 15 inches farther than the frog. 

 Question: How far did the frog jump?
[EX A]: 53

[EX Q]: Context: Dan has $ 4. He bought a candy bar for $ 7 and a chocolate for $ 6. 

 Question: How much money did he spend buying the candy bar and chocolate?
[EX A]:
13