We're dividing 87198108 by 815 
We want to divide 87198108 by 815.

Advancing to step 1:
If we divide 8 by 815, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 815

Going ahead to step 2:
87 divided by 815 is 0 with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 87 to get 87.
Bring next digit (1) of the dividend behind the 87 and repeat the process: 871 / 815

Let's proceed to step 3:
815 goes into 871 1 times with a remainder of 56.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 815 from 871 leaves us with 56.
Bring next digit (9) of the dividend behind the 56 and repeat the process: 569 / 815

Moving on to step 4:
When dividing 569 by 815, we get 0 with a remainder of 569.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 569 leaves us with 569.
Fetch the next digit (8) from the dividend, attach it to 569 and continue: 5698 / 815

Going ahead to step 5:
5698 divided by 815 is 6 with a remainder of 808.
The next digit of our result is 6. 
Result so far: 106.0
The remainder is 808 after subtracting 4890 from 5698.
Append the next digit (1) from the dividend to 808 and continue with: 8081 / 815

Let's proceed to step 6:
815 goes into 8081 9 times with a remainder of 746.
The next digit of our result is 9. 
Result so far: 1069.0
Deduct 7335 from 8081 and we're left with 746.
Append the next digit (0) from the dividend to 746 and continue with: 7460 / 815

On to step 7:
815 goes into 7460 9 times with a remainder of 125.
Put 9 as the next digit of the answer. 
Result so far: 10699.0
Subtracting 7335 from 7460 leaves us with 125.
Bring next digit (8) of the dividend behind the 125 and repeat the process: 1258 / 815

Moving on to step 8:
If we divide 1258 by 815, we get 1 and a remainder of 443.
The next digit of our result is 1. 
Result so far: 106991.0
If we subtract 815 from 1258, we get 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

On to step 9:
815 can be fit into 4430 5 times, resulting in a remainder of 355.
Write down 5 as next digit of the result. 
Result so far: 106991.5
Subtract 4075 from 4430 to get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Going ahead to step 10:
If we divide 3550 by 815, we get 4 and a remainder of 290.
Use 4 as the next digit of our solution. 
Result so far: 106991.54
If we subtract 3260 from 3550, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 11:
When dividing 2900 by 815, we get 3 with a remainder of 455.
The next digit of our result is 3. 
Result so far: 106991.543
The remainder is 455 after subtracting 2445 from 2900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Advancing to step 12:
When dividing 4550 by 815, we get 5 with a remainder of 475.
Record the quotient 5 as the next digit in the result. 
Result so far: 106991.5435
If we take 4075 away from 4550, we end up with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 13:
The number 815 fits into 4750 5 times, leaving a remainder of 675.
Put 5 as the next digit of the answer. 
Result so far: 106991.54355
The remainder is 675 after subtracting 4075 from 4750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

The final result is 106991.54355 with a remainder of 0.000675.