First let’s set up the problem:
78÷21 Step 1:
Take the whole number, 21, and multiply it by the denominator of the fraction, 7:
7 x 21 = 147
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:
87⋅21=8147 To display the answer to 8/7 Divided by 21 in decimal form, you can divide the numerator, 147, by the denominator, 8. The answer can be rounded to the nearest three decimal points, if needed:
8147=8147=18.38 So, in decimal form, 8 divided by 7/21 = 18.38
And in its simplest fractional form, 8 divided by 7/21 is 147/8