Let's divide 52851807 by 641
We're looking to find how many times 641 goes into 52851807.

On to step 1:
5 divided by 641 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 641

Let's proceed to step 2:
When dividing 52 by 641, we get 0 with a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 52 after subtracting 0 from 52.
Bring next digit (8) of the dividend behind the 52 and repeat the process: 528 / 641

Advancing to step 3:
641 can be fit into 528 0 times, resulting in a remainder of 528.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 528 to get 528.
Take the next digit (5) from the dividend and append it to 528, then repeat: 5285 / 641

Advancing to step 4:
When dividing 5285 by 641, we get 8 with a remainder of 157.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 5128 from 5285 and we're left with 157.
Bring next digit (1) of the dividend behind the 157 and repeat the process: 1571 / 641

Step 5:
641 goes into 1571 2 times with a remainder of 289.
Use 2 as the next digit of our solution. 
Result so far: 82.0
Subtract 1282 from 1571 to get 289.
Grab the next digit (8) from the dividend, add it to 289, then carry on: 2898 / 641

On to step 6:
2898 divided by 641 is 4 with a remainder of 334.
Put 4 as the next digit of the answer. 
Result so far: 824.0
Subtract 2564 from 2898 to get 334.
Fetch the next digit (0) from the dividend, attach it to 334 and continue: 3340 / 641

Advancing to step 7:
If we divide 3340 by 641, we get 5 and a remainder of 135.
Use 5 as the next digit of our solution. 
Result so far: 8245.0
If we take 3205 away from 3340, we end up with 135.
Include the next digit (7) from the dividend after 135, then repeat: 1357 / 641

Let's proceed to step 8:
The number 641 fits into 1357 2 times, leaving a remainder of 75.
Use 2 as the next digit of our solution. 
Result so far: 82452.0
If we subtract 1282 from 1357, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 9:
750 divided by 641 is 1 with a remainder of 109.
Put 1 as the next digit of the answer. 
Result so far: 82452.1
Subtract 641 from 750 to get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

On to step 10:
641 goes into 1090 1 times with a remainder of 449.
Write down 1 as next digit of the result. 
Result so far: 82452.11
If we subtract 641 from 1090, we get 449.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4490, and continue the process.

The final outcome is 82452.11, with a leftover of 0.449.