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.

[EX Q]: Olivia and her mom were picking carrots from their garden . Olivia picked 20 and her mother picked 14 . If only 19 of the carrots were good , how many bad carrots did they have ?
[EX A]: 15

[EX Q]: Sara grew 4 onions , Sally grew 5 onions , and Fred grew 9 onions . How many onions did they grow in all ?
[EX A]: 18

[EX Q]: Jennifer starts with 7 apples . She finds another 74 . How many apples does Jennifer end with ?
[EX A]:
81