First let’s set up the problem:
612÷21 Step 1:
Take the whole number, 21, and multiply it by the denominator of the fraction, 6:
6 x 21 = 126
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:
126⋅21=12126 To display the answer to 12/6 Divided by 21 in decimal form, you can divide the numerator, 126, by the denominator, 12. The answer can be rounded to the nearest three decimal points, if needed:
12126=221=10.5 So, in decimal form, 12 divided by 6/21 = 10.5
And in its simplest fractional form, 12 divided by 6/21 is 21/2