First let’s set up the problem:
420÷78 Step 1:
Take the whole number, 78, and multiply it by the denominator of the fraction, 4:
4 x 78 = 312
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:
204⋅78=20312 To display the answer to 20/4 Divided by 78 in decimal form, you can divide the numerator, 312, by the denominator, 20. The answer can be rounded to the nearest three decimal points, if needed:
20312=578=15.6 So, in decimal form, 20 divided by 4/78 = 15.6
And in its simplest fractional form, 20 divided by 4/78 is 78/5