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

[EX Q]: Benny bought 7 dozen eggs from the grocery store to bake some cakes . How many eggs did Benny buy ?
[EX A]: 84

[EX Q]: The first act included 5 clown mobiles , each stuffed with 28 clowns . How many clowns are inside all the clown mobiles combined ?
[EX A]: 140

[EX Q]: Nancy has 7 black balloons . Mary has 4 times more black balloons than Nancy . How many black balloons does Mary have now ?
[EX A]:
28