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.

Example Input: Henry earned 5 dollars for each lawn he mowed . If he had 12 lawns to mow , but forgot to mow 7 of them , how much money did he actually earn ?
Example Output: 25

Example Input: Jerry was helping the cafeteria workers pick up lunch trays , but he could only carry 8 trays at a time . If he had to pick up 9 trays from one table and 7 trays from another , how many trips will he make ?
Example Output: 2

Example Input: Isabel was selling her necklaces at a garage sale . She sold 3 bead necklaces and 3 gem stone necklaces . If each necklace cost 6 dollars , how much money did she earn ?
Example Output:
36