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.
Example: Context: Sam is 6 feet tall and Alex is 5 feet tall 

 Question: By how many feet is Sam taller than Alex? 
Example solution: 1
Example explanation:  Sam's height - Alex's height = 6-5 = 1

Problem: Context: Bobby ate 38 pieces of candy. Then he ate 36 more. He also ate 16 pieces of chocolate. 

 Question: How many more pieces of candy than chocolate did Bobby eat?

Solution: 58