We look at the division of 86631891 by 207 
We want to divide 86631891 by 207.

Moving on to step 1:
207 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 207

Step 2:
When dividing 86 by 207, we get 0 with a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (6) from the dividend, add it to 86, then carry on: 866 / 207

Let's proceed to step 3:
207 can be fit into 866 4 times, resulting in a remainder of 38.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 828 away from 866, we end up with 38.
Grab the next digit (3) from the dividend, add it to 38, then carry on: 383 / 207

Going ahead to step 4:
When dividing 383 by 207, we get 1 with a remainder of 176.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
The remainder is 176 after subtracting 207 from 383.
Take the next digit (1) from the dividend and append it to 176, then repeat: 1761 / 207

On to step 5:
When dividing 1761 by 207, we get 8 with a remainder of 105.
Use 8 as the next digit of our solution. 
Result so far: 418.0
The remainder is 105 after subtracting 1656 from 1761.
Take the next digit (8) from the dividend and append it to 105, then repeat: 1058 / 207

On to step 6:
1058 divided by 207 is 5 with a remainder of 23.
The number 5 becomes the next digit in our result. 
Result so far: 4185.0
If we subtract 1035 from 1058, we get 23.
Include the next digit (9) from the dividend after 23, then repeat: 239 / 207

Advancing to step 7:
207 can be fit into 239 1 times, resulting in a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 41851.0
If we subtract 207 from 239, we get 32.
Grab the next digit (1) from the dividend, add it to 32, then carry on: 321 / 207

On to step 8:
The number 207 fits into 321 1 times, leaving a remainder of 114.
Write down 1 as next digit of the result. 
Result so far: 418511.0
Subtracting 207 from 321 leaves us with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 9:
1140 divided by 207 is 5 with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 418511.5
Subtract 1035 from 1140 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Advancing to step 10:
1050 divided by 207 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 418511.55
Deduct 1035 from 1050 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 418511.55, with a leftover of 0.015.