First let’s set up the problem:
85÷81 Step 1:
Take the whole number, 81, and multiply it by the denominator of the fraction, 8:
8 x 81 = 648
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:
58⋅81=5648 To display the answer to 5/8 Divided by 81 in decimal form, you can divide the numerator, 648, by the denominator, 5. The answer can be rounded to the nearest three decimal points, if needed:
5648=5648=129.6 So, in decimal form, 5 divided by 8/81 = 129.6
And in its simplest fractional form, 5 divided by 8/81 is 648/5