instruction:
You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
Haley and her friends were recycling paper for their class . For every 3 pounds they recycled they earned one point . If Haley recycled 11 pounds and her friends recycled 16 pounds , how many points did they earn ?
answer:
9


question:
There are 7.75 gallons of water in Becky 's fish tank . If Becky adds 7 gallons more , how many gallons will there be in all ?
answer:
14.75


question:
Lucy has 212 fish . How many more fish does she need to buy to have 280 fish ?
answer:

68