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

Q: There are 33 oak trees currently in the park . Park workers had to cut down 18 oak trees that were damaged . How many oak trees will be in the park when the workers are finished ?

A: 15
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Q: Fred loves trading cards . He bought 2 packs of football cards for $ 2.73 each , a pack of Pokemon cards for $ 4.01 , and a deck of baseball cards for $ 8.95 . How much did Fred spend on cards ?

A: 18.42
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Q: A renovation project required 0.16666666666666666 truck - load of sand , 0.3333333333333333 truck - load of dirt , and 0.16666666666666666 truck - load of cement . How many truck - loads of material were needed in all ?

A:
0.6666666666666666
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