Teacher: You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Maria has 3 boxes of eggs . Each box holds 7 eggs and there are 8 boxes in a case . How many eggs does Maria have ?
Solution: 21
Reason: Total number of eggs that Maria has is 3*7 = 21

Now, solve this instance: Lena drove 204 miles . Using 10 gallons of gas at this rate , how many gallons of gas would she need to drive 255 miles ?
Student:
12.5