First let’s set up the problem:
1215÷78 Step 1:
Take the whole number, 78, and multiply it by the denominator of the fraction, 12:
12 x 78 = 936
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⋅78=15936 To display the answer to 15/12 Divided by 78 in decimal form, you can divide the numerator, 936, by the denominator, 15. The answer can be rounded to the nearest three decimal points, if needed:
15936=5312=62.4 So, in decimal form, 15 divided by 12/78 = 62.4
And in its simplest fractional form, 15 divided by 12/78 is 312/5