20.
1/4 can be rewritten as a decimal, which would be .25.
How many times does .25 go into 5?
5/.25 = 20.
Or if you don’t want to convert the fraction into a decimal you could multiple by the reciprocal of 1/4:
5 / (1/4) = 5 * 4 = 20.
Either way 5 divided by 1/4 is 20.
