First let’s set up the problem:
312÷45 Step 1:
Take the whole number, 45, and multiply it by the denominator of the fraction, 3:
3 x 45 = 135
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:
123⋅45=12135 To display the answer to 12/3 Divided by 45 in decimal form, you can divide the numerator, 135, by the denominator, 12. The answer can be rounded to the nearest three decimal points, if needed:
12135=445=11.25 So, in decimal form, 12 divided by 3/45 = 11.25
And in its simplest fractional form, 12 divided by 3/45 is 45/4