We're dividing 51766870 by 810 
Our goal is to divide 51766870 by 810.

Advancing to step 1:
5 divided by 810 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 810

Going ahead to step 2:
When dividing 51 by 810, we get 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Grab the next digit (7) from the dividend, add it to 51, then carry on: 517 / 810

Advancing to step 3:
810 can be fit into 517 0 times, resulting in a remainder of 517.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 517 and we're left with 517.
Include the next digit (6) from the dividend after 517, then repeat: 5176 / 810

Step 4:
810 goes into 5176 6 times with a remainder of 316.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 4860 from 5176 to get 316.
Grab the next digit (6) from the dividend, add it to 316, then carry on: 3166 / 810

Moving on to step 5:
When dividing 3166 by 810, we get 3 with a remainder of 736.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
Subtracting 2430 from 3166 leaves us with 736.
Take the next digit (8) from the dividend and append it to 736, then repeat: 7368 / 810

Let's proceed to step 6:
810 can be fit into 7368 9 times, resulting in a remainder of 78.
Put 9 as the next digit of the answer. 
Result so far: 639.0
The remainder is 78 after subtracting 7290 from 7368.
Include the next digit (7) from the dividend after 78, then repeat: 787 / 810

Moving on to step 7:
If we divide 787 by 810, we get 0 and a remainder of 787.
Write down 0 as next digit of the result. 
Result so far: 6390.0
The remainder is 787 after subtracting 0 from 787.
Fetch the next digit (0) from the dividend, attach it to 787 and continue: 7870 / 810

Advancing to step 8:
If we divide 7870 by 810, we get 9 and a remainder of 580.
Put 9 as the next digit of the answer. 
Result so far: 63909.0
Subtract 7290 from 7870 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Step 9:
When dividing 5800 by 810, we get 7 with a remainder of 130.
Put 7 as the next digit of the answer. 
Result so far: 63909.7
Deduct 5670 from 5800 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 10:
When dividing 1300 by 810, we get 1 with a remainder of 490.
The number 1 becomes the next digit in our result. 
Result so far: 63909.71
If we subtract 810 from 1300, we get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

On to step 11:
810 can be fit into 4900 6 times, resulting in a remainder of 40.
The next digit of our result is 6. 
Result so far: 63909.716
The remainder is 40 after subtracting 4860 from 4900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 12:
If we divide 400 by 810, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 63909.716
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 13:
810 goes into 4000 4 times with a remainder of 760.
The number 4 becomes the next digit in our result. 
Result so far: 63909.71604
Subtract 3240 from 4000 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 14:
7600 divided by 810 is 9 with a remainder of 310.
Put 9 as the next digit of the answer. 
Result so far: 63909.716049
Deduct 7290 from 7600 and we're left 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 15:
810 goes into 3100 3 times with a remainder of 670.
Record the quotient 3 as the next digit in the result. 
Result so far: 63909.7160493
The remainder is 670 after subtracting 2430 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Advancing to step 16:
6700 divided by 810 is 8 with a remainder of 220.
The next digit of our result is 8. 
Result so far: 63909.71604938
The remainder is 220 after subtracting 6480 from 6700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final outcome is 63909.71604938, with a leftover of 2.2e-07.