We look at the division of 23966102 by 810 
We're looking to find how many times 810 goes into 23966102.

Advancing to step 1:
When dividing 2 by 810, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 810

Let's proceed to step 2:
When dividing 23 by 810, we get 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 23 and we're left with 23.
Bring next digit (9) of the dividend behind the 23 and repeat the process: 239 / 810

Moving on to step 3:
810 goes into 239 0 times with a remainder of 239.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 239, we end up with 239.
Append the next digit (6) from the dividend to 239 and continue with: 2396 / 810

On to step 4:
810 goes into 2396 2 times with a remainder of 776.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1620 from 2396 leaves us with 776.
Take the next digit (6) from the dividend and append it to 776, then repeat: 7766 / 810

Advancing to step 5:
When dividing 7766 by 810, we get 9 with a remainder of 476.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Deduct 7290 from 7766 and we're left with 476.
Take the next digit (1) from the dividend and append it to 476, then repeat: 4761 / 810

Going ahead to step 6:
When dividing 4761 by 810, we get 5 with a remainder of 711.
Record the quotient 5 as the next digit in the result. 
Result so far: 295.0
If we subtract 4050 from 4761, we get 711.
Include the next digit (0) from the dividend after 711, then repeat: 7110 / 810

Step 7:
The number 810 fits into 7110 8 times, leaving a remainder of 630.
The number 8 becomes the next digit in our result. 
Result so far: 2958.0
If we subtract 6480 from 7110, we get 630.
Append the next digit (2) from the dividend to 630 and continue with: 6302 / 810

Moving on to step 8:
If we divide 6302 by 810, we get 7 and a remainder of 632.
Use 7 as the next digit of our solution. 
Result so far: 29587.0
Subtract 5670 from 6302 to get 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Let's proceed to step 9:
The number 810 fits into 6320 7 times, leaving a remainder of 650.
Use 7 as the next digit of our solution. 
Result so far: 29587.7
If we subtract 5670 from 6320, we get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

On to step 10:
When dividing 6500 by 810, we get 8 with a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 29587.78
If we subtract 6480 from 6500, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
If we divide 200 by 810, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 29587.78
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
810 can be fit into 2000 2 times, resulting in a remainder of 380.
Write down 2 as next digit of the result. 
Result so far: 29587.7802
The remainder is 380 after subtracting 1620 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 13:
The number 810 fits into 3800 4 times, leaving a remainder of 560.
Record the quotient 4 as the next digit in the result. 
Result so far: 29587.78024
Subtracting 3240 from 3800 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 14:
810 can be fit into 5600 6 times, resulting in a remainder of 740.
The next digit of our result is 6. 
Result so far: 29587.780246
If we take 4860 away from 5600, we end up with 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

On to step 15:
810 can be fit into 7400 9 times, resulting in a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 29587.7802469
The remainder is 110 after subtracting 7290 from 7400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 16:
810 goes into 1100 1 times with a remainder of 290.
Record the quotient 1 as the next digit in the result. 
Result so far: 29587.78024691
Subtracting 810 from 1100 leaves us with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final outcome is 29587.78024691, with a leftover of 2.9e-07.