We look at the division of 15579152 by 809 
We're looking to find how many times 809 goes into 15579152.

Advancing to step 1:
If we divide 1 by 809, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 809

Going ahead to step 2:
If we divide 15 by 809, we get 0 and a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Fetch the next digit (5) from the dividend, attach it to 15 and continue: 155 / 809

Going ahead to step 3:
809 goes into 155 0 times with a remainder of 155.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 155, we end up with 155.
Fetch the next digit (7) from the dividend, attach it to 155 and continue: 1557 / 809

Advancing to step 4:
When dividing 1557 by 809, we get 1 with a remainder of 748.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 748 after subtracting 809 from 1557.
Fetch the next digit (9) from the dividend, attach it to 748 and continue: 7489 / 809

On to step 5:
If we divide 7489 by 809, we get 9 and a remainder of 208.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Deduct 7281 from 7489 and we're left with 208.
Grab the next digit (1) from the dividend, add it to 208, then carry on: 2081 / 809

On to step 6:
The number 809 fits into 2081 2 times, leaving a remainder of 463.
Put 2 as the next digit of the answer. 
Result so far: 192.0
The remainder is 463 after subtracting 1618 from 2081.
Grab the next digit (5) from the dividend, add it to 463, then carry on: 4635 / 809

Step 7:
809 can be fit into 4635 5 times, resulting in a remainder of 590.
Record the quotient 5 as the next digit in the result. 
Result so far: 1925.0
The remainder is 590 after subtracting 4045 from 4635.
Include the next digit (2) from the dividend after 590, then repeat: 5902 / 809

Step 8:
When dividing 5902 by 809, we get 7 with a remainder of 239.
Record the quotient 7 as the next digit in the result. 
Result so far: 19257.0
If we subtract 5663 from 5902, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

Step 9:
When dividing 2390 by 809, we get 2 with a remainder of 772.
Use 2 as the next digit of our solution. 
Result so far: 19257.2
Subtract 1618 from 2390 to get 772.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7720, and continue the process.

Going ahead to step 10:
If we divide 7720 by 809, we get 9 and a remainder of 439.
Write down 9 as next digit of the result. 
Result so far: 19257.29
The remainder is 439 after subtracting 7281 from 7720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

On to step 11:
The number 809 fits into 4390 5 times, leaving a remainder of 345.
Use 5 as the next digit of our solution. 
Result so far: 19257.295
Subtract 4045 from 4390 to get 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

On to step 12:
3450 divided by 809 is 4 with a remainder of 214.
Write down 4 as next digit of the result. 
Result so far: 19257.2954
If we take 3236 away from 3450, we end up with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

On to step 13:
If we divide 2140 by 809, we get 2 and a remainder of 522.
Use 2 as the next digit of our solution. 
Result so far: 19257.29542
The remainder is 522 after subtracting 1618 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Going ahead to step 14:
The number 809 fits into 5220 6 times, leaving a remainder of 366.
The number 6 becomes the next digit in our result. 
Result so far: 19257.295426
Subtracting 4854 from 5220 leaves us with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Moving on to step 15:
809 goes into 3660 4 times with a remainder of 424.
Use 4 as the next digit of our solution. 
Result so far: 19257.2954264
Subtract 3236 from 3660 to get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Going ahead to step 16:
The number 809 fits into 4240 5 times, leaving a remainder of 195.
The number 5 becomes the next digit in our result. 
Result so far: 19257.29542645
Subtract 4045 from 4240 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

The final outcome is 19257.29542645, with a leftover of 1.95e-07.