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.
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Question: Context: Next on his checklist is wax to stick the feathers together. If the feathers require 166 g of wax and right now he has 20 g 

 Question: How many more grams of wax does he need?

Answer: 146


Question: Context: Zachary did 15 push-ups in gym class today. David did 39 more push-ups than Zachary. John did 9 push-ups less than David. 

 Question: How many more push-ups did Zachary do than John?

Answer: 30


Question: Context: Jesse's room is 12 feet long and 11 feet wide. 

 Question: How much longer is her room than it is wide?

Answer:
1