To divide 4 by 1/5, you are essentially asking, "How many times does 1/5 go into 4?"
To solve this, you can multiply the numerator by the reciprocal of the denominator.
Reciprocal of 1/5 = 5/1
So, 4 divided by 1/5 is equal to:
4 * (5/1) = 20/1 = 20
4 divided 1/5
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