12911604 divided by 665 
We want to divide 12911604 by 665.

Advancing to step 1:
The number 665 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 665

Going ahead to step 2:
665 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 665

Let's proceed to step 3:
If we divide 129 by 665, we get 0 and a remainder of 129.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 129, we get 129.
Grab the next digit (1) from the dividend, add it to 129, then carry on: 1291 / 665

Let's proceed to step 4:
If we divide 1291 by 665, we get 1 and a remainder of 626.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 665 from 1291 and we're left with 626.
Include the next digit (1) from the dividend after 626, then repeat: 6261 / 665

On to step 5:
665 can be fit into 6261 9 times, resulting in a remainder of 276.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 276 after subtracting 5985 from 6261.
Grab the next digit (6) from the dividend, add it to 276, then carry on: 2766 / 665

Step 6:
2766 divided by 665 is 4 with a remainder of 106.
Use 4 as the next digit of our solution. 
Result so far: 194.0
Subtract 2660 from 2766 to get 106.
Take the next digit (0) from the dividend and append it to 106, then repeat: 1060 / 665

Let's proceed to step 7:
665 can be fit into 1060 1 times, resulting in a remainder of 395.
Use 1 as the next digit of our solution. 
Result so far: 1941.0
If we subtract 665 from 1060, we get 395.
Append the next digit (4) from the dividend to 395 and continue with: 3954 / 665

On to step 8:
When dividing 3954 by 665, we get 5 with a remainder of 629.
Use 5 as the next digit of our solution. 
Result so far: 19415.0
The remainder is 629 after subtracting 3325 from 3954.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

Step 9:
When dividing 6290 by 665, we get 9 with a remainder of 305.
Use 9 as the next digit of our solution. 
Result so far: 19415.9
Subtract 5985 from 6290 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Advancing to step 10:
3050 divided by 665 is 4 with a remainder of 390.
Record the quotient 4 as the next digit in the result. 
Result so far: 19415.94
If we take 2660 away from 3050, we end up with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Step 11:
3900 divided by 665 is 5 with a remainder of 575.
Record the quotient 5 as the next digit in the result. 
Result so far: 19415.945
Subtracting 3325 from 3900 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Going ahead to step 12:
665 can be fit into 5750 8 times, resulting in a remainder of 430.
The number 8 becomes the next digit in our result. 
Result so far: 19415.9458
Subtracting 5320 from 5750 leaves us with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

On to step 13:
If we divide 4300 by 665, we get 6 and a remainder of 310.
Write down 6 as next digit of the result. 
Result so far: 19415.94586
Subtracting 3990 from 4300 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Going ahead to step 14:
665 can be fit into 3100 4 times, resulting in a remainder of 440.
Use 4 as the next digit of our solution. 
Result so far: 19415.945864
If we take 2660 away from 3100, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Going ahead to step 15:
665 goes into 4400 6 times with a remainder of 410.
Write down 6 as next digit of the result. 
Result so far: 19415.9458646
The remainder is 410 after subtracting 3990 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

On to step 16:
665 goes into 4100 6 times with a remainder of 110.
Record the quotient 6 as the next digit in the result. 
Result so far: 19415.94586466
If we take 3990 away from 4100, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

In conclusion, the division gives 19415.94586466 with a balance of 1.1e-07.