First let’s set up the problem:
1215÷42 Step 1:
Take the whole number, 42, and multiply it by the denominator of the fraction, 12:
12 x 42 = 504
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⋅42=15504 To display the answer to 15/12 Divided by 42 in decimal form, you can divide the numerator, 504, by the denominator, 15. The answer can be rounded to the nearest three decimal points, if needed:
15504=5168=33.6 So, in decimal form, 15 divided by 12/42 = 33.6
And in its simplest fractional form, 15 divided by 12/42 is 168/5