31524 ÷ 15 
We're looking to find how many times 15 goes into 31524.

Going ahead to step 1:
The number 15 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 15

Going ahead to step 2:
When dividing 31 by 15, we get 2 with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 1 after subtracting 30 from 31.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 15

On to step 3:
The number 15 fits into 15 1 times, leaving a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Deduct 15 from 15 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 15

Let's proceed to step 4:
When dividing 2 by 15, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 210.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 15

Step 5:
15 goes into 24 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 2101.0
If we take 15 away from 24, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 6:
15 can be fit into 90 6 times, resulting in a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 2101.6
Subtracting 90 from 90 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 2101.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
The number 15 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2101.6
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 2101.6, and the remainder is 0.0.