We look at the division of 12808609 by 657 
We want to figure out the number of times 12808609 can be divided by 657.

Step 1:
1 divided by 657 is 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.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 657

Let's proceed to step 2:
657 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 657

On to step 3:
If we divide 128 by 657, we get 0 and a remainder of 128.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 128 after subtracting 0 from 128.
Fetch the next digit (0) from the dividend, attach it to 128 and continue: 1280 / 657

Advancing to step 4:
657 goes into 1280 1 times with a remainder of 623.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 657 from 1280 and we're left with 623.
Append the next digit (8) from the dividend to 623 and continue with: 6238 / 657

On to step 5:
When dividing 6238 by 657, we get 9 with a remainder of 325.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 5913 from 6238, we get 325.
Bring next digit (6) of the dividend behind the 325 and repeat the process: 3256 / 657

Step 6:
3256 divided by 657 is 4 with a remainder of 628.
Use 4 as the next digit of our solution. 
Result so far: 194.0
Subtracting 2628 from 3256 leaves us with 628.
Grab the next digit (0) from the dividend, add it to 628, then carry on: 6280 / 657

Step 7:
If we divide 6280 by 657, we get 9 and a remainder of 367.
Write down 9 as next digit of the result. 
Result so far: 1949.0
If we take 5913 away from 6280, we end up with 367.
Append the next digit (9) from the dividend to 367 and continue with: 3679 / 657

Moving on to step 8:
When dividing 3679 by 657, we get 5 with a remainder of 394.
Put 5 as the next digit of the answer. 
Result so far: 19495.0
If we take 3285 away from 3679, we end up with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Moving on to step 9:
When dividing 3940 by 657, we get 5 with a remainder of 655.
The number 5 becomes the next digit in our result. 
Result so far: 19495.5
Subtract 3285 from 3940 to get 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Advancing to step 10:
If we divide 6550 by 657, we get 9 and a remainder of 637.
The number 9 becomes the next digit in our result. 
Result so far: 19495.59
Subtract 5913 from 6550 to get 637.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6370, and continue the process.

Going ahead to step 11:
6370 divided by 657 is 9 with a remainder of 457.
Record the quotient 9 as the next digit in the result. 
Result so far: 19495.599
Deduct 5913 from 6370 and we're left with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

The final outcome is 19495.599, with a leftover of 0.0457.