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]: debby was placing her spare change into stacks . 1 stack had 4 coins and the other had 8 how many coins did she have total ?
[A]: 12

[Q]: the wings now need to be heated . if the oven is at 150 degrees and the required temperature is 546 degrees how many more degrees does the oven temperature need to increase ?
[A]:
396