First let’s set up the problem:
215÷31 Step 1:
Take the whole number, 31, and multiply it by the denominator of the fraction, 21:
21 x 31 = 651
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:
521⋅31=5651 To display the answer to 5/21 Divided by 31 in decimal form, you can divide the numerator, 651, by the denominator, 5. The answer can be rounded to the nearest three decimal points, if needed:
5651=5651=130.2 So, in decimal form, 5 divided by 21/31 = 130.2
And in its simplest fractional form, 5 divided by 21/31 is 651/5