86522599 ÷ 844 
We want to divide 86522599 by 844.

On to step 1:
The number 844 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 844

Advancing to step 2:
If we divide 86 by 844, we get 0 and a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Append the next digit (5) from the dividend to 86 and continue with: 865 / 844

Moving on to step 3:
The number 844 fits into 865 1 times, leaving a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 844 from 865 leaves us with 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 844

Let's proceed to step 4:
When dividing 212 by 844, we get 0 with a remainder of 212.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 212, we end up with 212.
Append the next digit (2) from the dividend to 212 and continue with: 2122 / 844

Step 5:
The number 844 fits into 2122 2 times, leaving a remainder of 434.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
Deduct 1688 from 2122 and we're left with 434.
Grab the next digit (5) from the dividend, add it to 434, then carry on: 4345 / 844

Going ahead to step 6:
844 goes into 4345 5 times with a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 1025.0
Subtracting 4220 from 4345 leaves us with 125.
Fetch the next digit (9) from the dividend, attach it to 125 and continue: 1259 / 844

Going ahead to step 7:
1259 divided by 844 is 1 with a remainder of 415.
The number 1 becomes the next digit in our result. 
Result so far: 10251.0
Deduct 844 from 1259 and we're left with 415.
Bring next digit (9) of the dividend behind the 415 and repeat the process: 4159 / 844

On to step 8:
The number 844 fits into 4159 4 times, leaving a remainder of 783.
The next digit of our result is 4. 
Result so far: 102514.0
If we subtract 3376 from 4159, we get 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

Moving on to step 9:
844 can be fit into 7830 9 times, resulting in a remainder of 234.
Record the quotient 9 as the next digit in the result. 
Result so far: 102514.9
If we take 7596 away from 7830, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Going ahead to step 10:
When dividing 2340 by 844, we get 2 with a remainder of 652.
The number 2 becomes the next digit in our result. 
Result so far: 102514.92
The remainder is 652 after subtracting 1688 from 2340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Advancing to step 11:
If we divide 6520 by 844, we get 7 and a remainder of 612.
Put 7 as the next digit of the answer. 
Result so far: 102514.927
If we subtract 5908 from 6520, we get 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Step 12:
The number 844 fits into 6120 7 times, leaving a remainder of 212.
Use 7 as the next digit of our solution. 
Result so far: 102514.9277
Deduct 5908 from 6120 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The final result is 102514.9277 with a remainder of 0.00212.