First let’s set up the problem:
520÷81 Step 1:
Take the whole number, 81, and multiply it by the denominator of the fraction, 5:
5 x 81 = 405
Step 2:
The result of this multiplication will now become the denominator of the answer. The answer to the problem in fraction form can now be seen:
205⋅81=20405 To display the answer to 20/5 Divided by 81 in decimal form, you can divide the numerator, 405, by the denominator, 20. The answer can be rounded to the nearest three decimal points, if needed:
20405=481=20.25 So, in decimal form, 20 divided by 5/81 = 20.25
And in its simplest fractional form, 20 divided by 5/81 is 81/4