You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.

Q: Dina made cookies. She used 0.625 cup of flour and 0.25 cup of sugar. How much more flour than sugar did Dina use?

A: 0.375
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Q: To fill an order, the factory dyed 61921 yards of silk green and 49500yards pink. How many yards of silk did it dye for that order?

A: 111421.0
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Q: Last Saturday, Spencer walked all over town running errands. First, he walked 0.3 mile from his house to the library and 0.1 mile from thelibrary to the post office. Then he walked 0.4 mile from the postoffice back home. How many miles did Spencer walk in all?

A:
0.8
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