Let's divide 57243817 by 809
Our goal is to divide 57243817 by 809.

On to step 1:
If we divide 5 by 809, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 809

Step 2:
The number 809 fits into 57 0 times, leaving a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Fetch the next digit (2) from the dividend, attach it to 57 and continue: 572 / 809

Step 3:
The number 809 fits into 572 0 times, leaving a remainder of 572.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 572 and we're left with 572.
Include the next digit (4) from the dividend after 572, then repeat: 5724 / 809

Step 4:
If we divide 5724 by 809, we get 7 and a remainder of 61.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 5663 from 5724 and we're left with 61.
Fetch the next digit (3) from the dividend, attach it to 61 and continue: 613 / 809

Moving on to step 5:
809 goes into 613 0 times with a remainder of 613.
The next digit of our result is 0. 
Result so far: 70.0
If we take 0 away from 613, we end up with 613.
Fetch the next digit (8) from the dividend, attach it to 613 and continue: 6138 / 809

Moving on to step 6:
The number 809 fits into 6138 7 times, leaving a remainder of 475.
The next digit of our result is 7. 
Result so far: 707.0
If we take 5663 away from 6138, we end up with 475.
Bring next digit (1) of the dividend behind the 475 and repeat the process: 4751 / 809

Advancing to step 7:
809 goes into 4751 5 times with a remainder of 706.
Use 5 as the next digit of our solution. 
Result so far: 7075.0
Subtract 4045 from 4751 to get 706.
Bring next digit (7) of the dividend behind the 706 and repeat the process: 7067 / 809

Moving on to step 8:
809 goes into 7067 8 times with a remainder of 595.
The next digit of our result is 8. 
Result so far: 70758.0
If we take 6472 away from 7067, we end up with 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Advancing to step 9:
When dividing 5950 by 809, we get 7 with a remainder of 287.
Put 7 as the next digit of the answer. 
Result so far: 70758.7
Subtract 5663 from 5950 to get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Let's proceed to step 10:
2870 divided by 809 is 3 with a remainder of 443.
Use 3 as the next digit of our solution. 
Result so far: 70758.73
Subtracting 2427 from 2870 leaves us with 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4430, and continue the process.

Moving on to step 11:
The number 809 fits into 4430 5 times, leaving a remainder of 385.
Write down 5 as next digit of the result. 
Result so far: 70758.735
If we take 4045 away from 4430, we end up with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Going ahead to step 12:
809 goes into 3850 4 times with a remainder of 614.
Use 4 as the next digit of our solution. 
Result so far: 70758.7354
Subtracting 3236 from 3850 leaves us with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Step 13:
The number 809 fits into 6140 7 times, leaving a remainder of 477.
Use 7 as the next digit of our solution. 
Result so far: 70758.73547
Subtracting 5663 from 6140 leaves us with 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

On to step 14:
4770 divided by 809 is 5 with a remainder of 725.
Put 5 as the next digit of the answer. 
Result so far: 70758.735475
The remainder is 725 after subtracting 4045 from 4770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7250, and continue the process.

Let's proceed to step 15:
809 can be fit into 7250 8 times, resulting in a remainder of 778.
Use 8 as the next digit of our solution. 
Result so far: 70758.7354758
The remainder is 778 after subtracting 6472 from 7250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7780, and continue the process.

Step 16:
809 can be fit into 7780 9 times, resulting in a remainder of 499.
Write down 9 as next digit of the result. 
Result so far: 70758.73547589
If we subtract 7281 from 7780, we get 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

The final result is 70758.73547589 with a remainder of 4.99e-07.