You are given a math word problem and you are supposed to apply an addition mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Context: Rachel had to complete 5 pages of math homework, 10 pages of reading homework and 6 more pages of biology homework. 

 Question: How many pages of reading and biology homework did she have to complete?
16

Context: A waiter had 12 customers. While 15 customers left he got 14 new customers. 

 Question: How many customers does he still have?
11

Context: Nell collects baseball cards. She gave 301 of her cards to Jeff and now has 154 cards left.. 

 Question: How many cards did Nell have initially?

455

