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: Haley grew 14 trees in her backyard. After a typhoon 9 died. 

 Question: How many more trees died in the typhoon than those that survived?

Answer: 4


Question: Context: Haley grew 20 trees in her backyard. After a typhoon 4 trees were left. 

 Question: How many trees died in the typhoon?

Answer: 16


Question: Context: Every day Ryan spends a total of 3 hours on learning english and chinese. If he spends 2 hours on learning english everyday 

 Question: How many hours does he spend on learning chinese?

Answer:
1