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

Q: David has 8 bananas . He gets 50 more from Christopher . Later , David buys 9 cards at the store . How many bananas does David have in all ?

A: 58
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Q: Christopher strolled 5 miles at 4 miles per hour . How long did Christopher stroll ?

A: 1.25
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Q: At the hardware store , 0.25 the nails are size 2d and 0.5 the nails are size 4d . What fraction of the nails are either size 2d or 4d ?

A:
0.75
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