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.

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?
58

Context: Dave had 19 apps on his phone. He deleted 5 apps. 

 Question: How many apps are left on his phone?
14

Context: Josh had 4 marbles in his collection. He lost 16 marbles and found 8 new ones. 

 Question: How many more marbles did he lose than those he found?

8