First let’s set up the problem:
313÷87 Step 1:
Take the whole number, 87, and multiply it by the denominator of the fraction, 3:
3 x 87 = 261
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:
133⋅87=13261 To display the answer to 13/3 Divided by 87 in decimal form, you can divide the numerator, 261, by the denominator, 13. The answer can be rounded to the nearest three decimal points, if needed:
13261=13261=20.08 So, in decimal form, 13 divided by 3/87 = 20.08
And in its simplest fractional form, 13 divided by 3/87 is 261/13