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According to a survey, ``80`%` of college students have a smartphone. Re-write ``80`%` as a ratio reduced to simplest terms.
Box 1: Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity
`4/5`