You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[Q]: there are some passengers on a bus . at a bus stop 7 more passengers got on the bus and 9 passengers got off . if there are 26 passengers in the bus in the end how many passengers were there at first ?
[A]: 28


[Q]: during recess buddy went to the cafeteria where he met other students from different grades . if he met 14 second grade students 10 4 grade students and 16 fifth grade students how many more students did buddy meet during recess ?
[A]: 40


[Q]: a florist had 50 roses . if she sold 15 of them and then later picked 21 more how many roses would she have ?
[A]:
56


