First let’s set up the problem:
1215÷31 Step 1:
Take the whole number, 31, and multiply it by the denominator of the fraction, 12:
12 x 31 = 372
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:
1512⋅31=15372 To display the answer to 15/12 Divided by 31 in decimal form, you can divide the numerator, 372, by the denominator, 15. The answer can be rounded to the nearest three decimal points, if needed:
15372=5124=24.8 So, in decimal form, 15 divided by 12/31 = 24.8
And in its simplest fractional form, 15 divided by 12/31 is 124/5