15118201 ÷ 869 
We want to figure out the number of times 15118201 can be divided by 869.

On to step 1:
If we divide 1 by 869, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 869

Moving on to step 2:
The number 869 fits into 15 0 times, leaving a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Include the next digit (1) from the dividend after 15, then repeat: 151 / 869

Going ahead to step 3:
If we divide 151 by 869, we get 0 and a remainder of 151.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 151, we end up with 151.
Take the next digit (1) from the dividend and append it to 151, then repeat: 1511 / 869

Step 4:
When dividing 1511 by 869, we get 1 with a remainder of 642.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 869 from 1511, we get 642.
Take the next digit (8) from the dividend and append it to 642, then repeat: 6428 / 869

Advancing to step 5:
When dividing 6428 by 869, we get 7 with a remainder of 345.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 6083 from 6428, we get 345.
Append the next digit (2) from the dividend to 345 and continue with: 3452 / 869

Step 6:
If we divide 3452 by 869, we get 3 and a remainder of 845.
Put 3 as the next digit of the answer. 
Result so far: 173.0
If we subtract 2607 from 3452, we get 845.
Append the next digit (0) from the dividend to 845 and continue with: 8450 / 869

Going ahead to step 7:
8450 divided by 869 is 9 with a remainder of 629.
The next digit of our result is 9. 
Result so far: 1739.0
Deduct 7821 from 8450 and we're left with 629.
Bring next digit (1) of the dividend behind the 629 and repeat the process: 6291 / 869

Going ahead to step 8:
6291 divided by 869 is 7 with a remainder of 208.
Record the quotient 7 as the next digit in the result. 
Result so far: 17397.0
If we subtract 6083 from 6291, we get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Let's proceed to step 9:
If we divide 2080 by 869, we get 2 and a remainder of 342.
Record the quotient 2 as the next digit in the result. 
Result so far: 17397.2
Deduct 1738 from 2080 and we're left with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 10:
869 goes into 3420 3 times with a remainder of 813.
Write down 3 as next digit of the result. 
Result so far: 17397.23
Deduct 2607 from 3420 and we're left with 813.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8130, and continue the process.

Step 11:
8130 divided by 869 is 9 with a remainder of 309.
The number 9 becomes the next digit in our result. 
Result so far: 17397.239
The remainder is 309 after subtracting 7821 from 8130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

On to step 12:
3090 divided by 869 is 3 with a remainder of 483.
Put 3 as the next digit of the answer. 
Result so far: 17397.2393
Subtracting 2607 from 3090 leaves us with 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Advancing to step 13:
4830 divided by 869 is 5 with a remainder of 485.
Put 5 as the next digit of the answer. 
Result so far: 17397.23935
The remainder is 485 after subtracting 4345 from 4830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

On to step 14:
869 can be fit into 4850 5 times, resulting in a remainder of 505.
The next digit of our result is 5. 
Result so far: 17397.239355
Deduct 4345 from 4850 and we're left with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Our division results in 17397.239355 with a remaining 5.05e-05.