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:
a pet store was selling mice 2 for $ 5.34 . if they ended up selling 7 mice how much money would they have earned ?

Ex Output:
18.69


Ex Input:
robin has 27 packages of gum . there are 18 pieces in each package . how many pieces of gum does robin have ?

Ex Output:
486


Ex Input:
billy was making ice using ice trays . each tray held 9 ice cubes . if he had 8 trays how many cubes could he make ?

Ex Output:

72