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.

Ex Input:
after resting they decided to go for a swim . if the depth of the water is 10 times dean 's height and he stands at 6 feet how deep was the water ?

Ex Output:
60


Ex Input:
there are 397 butterflies . each butterfly has 12 black dots and 17 yellow dots . how many black dots are there in all ?

Ex Output:
4764


Ex Input:
a shoe store was having a back to school sale where you could buy 2 pairs of shoes for $ 23.10 . if a large family decided to buy 7 pairs of shoes how much would it cost them ?

Ex Output:

80.85