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: Rachel picked 7 ripe apples from her tree. Now the tree has 5 apples still on it. If 3 of those are ripe and the rest are unripe

Question: How many unripe apples does the tree have now?

Answer: 2

Question: Context: Mary is baking a cake. The recipe calls for 9 cups of flour and 5 cups of sugar. She already put in 3 cups of flour and 62 cups of sugar.

Question: How many more cups of flour does she need to add?

Answer: 6

Question: Context: A farmer had 160 tomatoes in his garden. If he picked 56 of them yesterday and 41 today.

Question: How many did he have left after yesterday's picking?

Answer:
104