First let’s set up the problem:
315÷43 Step 1:
Take the whole number, 43, and multiply it by the denominator of the fraction, 3:
3 x 43 = 129
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:
153⋅43=15129 To display the answer to 15/3 Divided by 43 in decimal form, you can divide the numerator, 129, by the denominator, 15. The answer can be rounded to the nearest three decimal points, if needed:
15129=543=8.6 So, in decimal form, 15 divided by 3/43 = 8.6
And in its simplest fractional form, 15 divided by 3/43 is 43/5