You are given a math word problem and you are supposed to apply a single mathematical operator 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]: rob is very fond of tall structures . he likes collecting pictures and comparing them . 2 of his favorite buildings are chicago 's sears tower and dubai 's burj khalifa . if burj khalifa stands at 830 meters high and sears stands at 527 meters high how much higher is burj khalifa than sears ?
[A]: 303


[Q]: shelby 's teacher gives out gold stars for great math work . yesterday shelby earned 4 gold stars . today she earned 3 more . how many gold stars did shelby earn in all ?
[A]: 7


[Q]: the last stop of their tour was italy ; there they visited naples the place where modern pizza was invented . during their stay there she ate 598 grams of pizza and her sister ate 354 how many grams of pizza did rachel and bella ate there ?
[A]:
952


