Detailed Instructions: 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.
Q: Roger earned 9 dollars for each lawn he mowed . If he had 14 lawns to mow , but forgot to mow 8 of them , how much money did he actually earn ?
A:
54