We look at the division of 13515 by 36 
We want to figure out the number of times 13515 can be divided by 36.

Step 1:
When dividing 1 by 36, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 36

Going ahead to step 2:
When dividing 13 by 36, we get 0 with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 36

Step 3:
36 goes into 135 3 times with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 108 from 135 leaves us with 27.
Append the next digit (1) from the dividend to 27 and continue with: 271 / 36

Moving on to step 4:
The number 36 fits into 271 7 times, leaving a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 252 from 271 to get 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 36

On to step 5:
If we divide 195 by 36, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 375.0
Deduct 180 from 195 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 6:
If we divide 150 by 36, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 375.4
If we subtract 144 from 150, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
60 divided by 36 is 1 with a remainder of 24.
The next digit of our result is 1. 
Result so far: 375.41
Subtracting 36 from 60 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 8:
The number 36 fits into 240 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 375.416
Subtract 216 from 240 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
The number 36 fits into 240 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 375.4166
If we take 216 away from 240, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 375.4166 with a remainder of 0.00024.