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.

she also ate a hearty breakfast so that she would have enough energy . she bought 5 pieces of her favorite bread . if each piece of bread costs 30 cents how much did jenny spend for her breakfast ?
150

at the baseball stadium the price for popcorn is $ 14.70 for 5 bags . if you wanted to buy 4 bags of popcorn how much would it cost ?
11.76

mrs. hilt uses 2 ounces of detergent to wash a pound of clothes . how many ounces of soap will she use to wash 9 pounds of clothes ?

18