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: Jack received 9 emails in the morning, 10 emails in the afternoon and 7 emails in the evening. 

 Question: How many more emails did Jack receive in the morning than in the evening?

Answer: 2


Question: Context: 2 birds were sitting on the fence. 5 more birds and 4 more storks came to join them. 

 Question: How many more birds than storks are sitting on the fence?

Answer:
3