We look at the division of 12634748 by 810 
We want to divide 12634748 by 810.

Step 1:
The number 810 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 810

Let's proceed to step 2:
When dividing 12 by 810, we get 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 810

On to step 3:
126 divided by 810 is 0 with a remainder of 126.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 126 leaves us with 126.
Fetch the next digit (3) from the dividend, attach it to 126 and continue: 1263 / 810

Step 4:
810 can be fit into 1263 1 times, resulting in a remainder of 453.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 810 from 1263, we get 453.
Fetch the next digit (4) from the dividend, attach it to 453 and continue: 4534 / 810

On to step 5:
810 can be fit into 4534 5 times, resulting in a remainder of 484.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 484 after subtracting 4050 from 4534.
Take the next digit (7) from the dividend and append it to 484, then repeat: 4847 / 810

Advancing to step 6:
When dividing 4847 by 810, we get 5 with a remainder of 797.
Use 5 as the next digit of our solution. 
Result so far: 155.0
The remainder is 797 after subtracting 4050 from 4847.
Append the next digit (4) from the dividend to 797 and continue with: 7974 / 810

Step 7:
810 goes into 7974 9 times with a remainder of 684.
Put 9 as the next digit of the answer. 
Result so far: 1559.0
Subtract 7290 from 7974 to get 684.
Bring next digit (8) of the dividend behind the 684 and repeat the process: 6848 / 810

Step 8:
810 can be fit into 6848 8 times, resulting in a remainder of 368.
The next digit of our result is 8. 
Result so far: 15598.0
Subtract 6480 from 6848 to get 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 9:
810 goes into 3680 4 times with a remainder of 440.
The next digit of our result is 4. 
Result so far: 15598.4
Subtracting 3240 from 3680 leaves us 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.

On to step 10:
810 can be fit into 4400 5 times, resulting in a remainder of 350.
Use 5 as the next digit of our solution. 
Result so far: 15598.45
Deduct 4050 from 4400 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 11:
The number 810 fits into 3500 4 times, leaving a remainder of 260.
Use 4 as the next digit of our solution. 
Result so far: 15598.454
If we take 3240 away from 3500, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 12:
When dividing 2600 by 810, we get 3 with a remainder of 170.
Write down 3 as next digit of the result. 
Result so far: 15598.4543
If we take 2430 away from 2600, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 13:
810 goes into 1700 2 times with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 15598.45432
Subtracting 1620 from 1700 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 14:
The number 810 fits into 800 0 times, leaving a remainder of 800.
Use 0 as the next digit of our solution. 
Result so far: 15598.45432
Subtracting 0 from 800 leaves us with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Advancing to step 15:
8000 divided by 810 is 9 with a remainder of 710.
Write down 9 as next digit of the result. 
Result so far: 15598.4543209
Subtract 7290 from 8000 to get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Advancing to step 16:
810 can be fit into 7100 8 times, resulting in a remainder of 620.
Put 8 as the next digit of the answer. 
Result so far: 15598.45432098
If we take 6480 away from 7100, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

The quotient of the division is 15598.45432098, and the remainder is 6.2e-07.