Exercise: read several files

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Given several files where each file contains two numbers separated by a comma, print out the result of dividing the first number by the second number. e.g.

go run read_several_files.go a.txt b.txt c.txt d.txt

should work.

examples/read-several-files/a.txt

4,2

examples/read-several-files/c.txt

4,0

examples/read-several-files/d.txt

21,3