First let’s set up the problem:
1218÷20 Step 1:
Take the whole number, 20, and multiply it by the denominator of the fraction, 12:
12 x 20 = 240
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:
1812⋅20=18240 To display the answer to 18/12 Divided by 20 in decimal form, you can divide the numerator, 240, by the denominator, 18. The answer can be rounded to the nearest three decimal points, if needed:
18240=340=13.33 So, in decimal form, 18 divided by 12/20 = 13.33
And in its simplest fractional form, 18 divided by 12/20 is 40/3