We're dividing 12583776 by 817 
We want to divide 12583776 by 817.

Let's proceed to step 1:
1 divided by 817 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 817

On to step 2:
If we divide 12 by 817, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 817

Let's proceed to step 3:
If we divide 125 by 817, we get 0 and a remainder of 125.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 125 and we're left with 125.
Bring next digit (8) of the dividend behind the 125 and repeat the process: 1258 / 817

Advancing to step 4:
817 goes into 1258 1 times with a remainder of 441.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 441 after subtracting 817 from 1258.
Bring next digit (3) of the dividend behind the 441 and repeat the process: 4413 / 817

On to step 5:
817 can be fit into 4413 5 times, resulting in a remainder of 328.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 328 after subtracting 4085 from 4413.
Fetch the next digit (7) from the dividend, attach it to 328 and continue: 3287 / 817

On to step 6:
817 goes into 3287 4 times with a remainder of 19.
Put 4 as the next digit of the answer. 
Result so far: 154.0
If we subtract 3268 from 3287, we get 19.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 817

On to step 7:
817 goes into 197 0 times with a remainder of 197.
Write down 0 as next digit of the result. 
Result so far: 1540.0
Deduct 0 from 197 and we're left with 197.
Fetch the next digit (6) from the dividend, attach it to 197 and continue: 1976 / 817

Moving on to step 8:
When dividing 1976 by 817, we get 2 with a remainder of 342.
The next digit of our result is 2. 
Result so far: 15402.0
If we take 1634 away from 1976, we end up 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.

Going ahead to step 9:
817 can be fit into 3420 4 times, resulting in a remainder of 152.
Use 4 as the next digit of our solution. 
Result so far: 15402.4
If we subtract 3268 from 3420, we get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 10:
817 can be fit into 1520 1 times, resulting in a remainder of 703.
Write down 1 as next digit of the result. 
Result so far: 15402.41
If we subtract 817 from 1520, we get 703.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7030, and continue the process.

Going ahead to step 11:
When dividing 7030 by 817, we get 8 with a remainder of 494.
Use 8 as the next digit of our solution. 
Result so far: 15402.418
Deduct 6536 from 7030 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Advancing to step 12:
The number 817 fits into 4940 6 times, leaving a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 15402.4186
If we subtract 4902 from 4940, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 13:
380 divided by 817 is 0 with a remainder of 380.
Record the quotient 0 as the next digit in the result. 
Result so far: 15402.4186
Subtract 0 from 380 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 14:
The number 817 fits into 3800 4 times, leaving a remainder of 532.
Put 4 as the next digit of the answer. 
Result so far: 15402.418604
Subtracting 3268 from 3800 leaves us with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Step 15:
817 can be fit into 5320 6 times, resulting in a remainder of 418.
Use 6 as the next digit of our solution. 
Result so far: 15402.4186046
If we take 4902 away from 5320, we end up with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Step 16:
If we divide 4180 by 817, we get 5 and a remainder of 95.
The next digit of our result is 5. 
Result so far: 15402.41860465
Subtracting 4085 from 4180 leaves us with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

The final outcome is 15402.41860465, with a leftover of 9.5e-08.