We look at the division of 52517431 by 800 
We're looking to find how many times 800 goes into 52517431.

Step 1:
If we divide 5 by 800, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 800

Let's proceed to step 2:
If we divide 52 by 800, we get 0 and a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Append the next digit (5) from the dividend to 52 and continue with: 525 / 800

Let's proceed to step 3:
When dividing 525 by 800, we get 0 with a remainder of 525.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 525, we end up with 525.
Append the next digit (1) from the dividend to 525 and continue with: 5251 / 800

Going ahead to step 4:
800 goes into 5251 6 times with a remainder of 451.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 4800 from 5251 leaves us with 451.
Fetch the next digit (7) from the dividend, attach it to 451 and continue: 4517 / 800

On to step 5:
4517 divided by 800 is 5 with a remainder of 517.
Use 5 as the next digit of our solution. 
Result so far: 65.0
The remainder is 517 after subtracting 4000 from 4517.
Bring next digit (4) of the dividend behind the 517 and repeat the process: 5174 / 800

Moving on to step 6:
The number 800 fits into 5174 6 times, leaving a remainder of 374.
Put 6 as the next digit of the answer. 
Result so far: 656.0
If we subtract 4800 from 5174, we get 374.
Include the next digit (3) from the dividend after 374, then repeat: 3743 / 800

Advancing to step 7:
When dividing 3743 by 800, we get 4 with a remainder of 543.
The next digit of our result is 4. 
Result so far: 6564.0
If we take 3200 away from 3743, we end up with 543.
Take the next digit (1) from the dividend and append it to 543, then repeat: 5431 / 800

Going ahead to step 8:
If we divide 5431 by 800, we get 6 and a remainder of 631.
Write down 6 as next digit of the result. 
Result so far: 65646.0
Subtract 4800 from 5431 to get 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Going ahead to step 9:
If we divide 6310 by 800, we get 7 and a remainder of 710.
The next digit of our result is 7. 
Result so far: 65646.7
The remainder is 710 after subtracting 5600 from 6310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

On to step 10:
800 goes into 7100 8 times with a remainder of 700.
Record the quotient 8 as the next digit in the result. 
Result so far: 65646.78
If we subtract 6400 from 7100, we get 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Moving on to step 11:
When dividing 7000 by 800, we get 8 with a remainder of 600.
Put 8 as the next digit of the answer. 
Result so far: 65646.788
Subtracting 6400 from 7000 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

The final outcome is 65646.788, with a leftover of 0.06.