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 Input:
Context: Mary is baking a cake. The recipe calls for 6 cups of flour and 13 cups of sugar. She already put in some cups of flour. If she still needs 8 more cups of flour than sugar 

 Question: How many more cups of flour does she need to add?

Ex Output:
21


Ex Input:
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 Output:
53


Ex Input:
Context: Paul got a box of some crayons for his birthday. By the end of the school year he had either lost or given away 551 of them and only had 177 left. 

 Question: How many crayons did he get for his birthday?

Ex Output:

728