We're dividing 86671598 by 771 
We want to divide 86671598 by 771.

Step 1:
If we divide 8 by 771, we get 0 and 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.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 771

Moving on to step 2:
The number 771 fits into 86 0 times, leaving a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Bring next digit (6) of the dividend behind the 86 and repeat the process: 866 / 771

On to step 3:
771 goes into 866 1 times with a remainder of 95.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 771 from 866 and we're left with 95.
Fetch the next digit (7) from the dividend, attach it to 95 and continue: 957 / 771

Let's proceed to step 4:
The number 771 fits into 957 1 times, leaving a remainder of 186.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 771 from 957 and we're left with 186.
Grab the next digit (1) from the dividend, add it to 186, then carry on: 1861 / 771

Step 5:
771 goes into 1861 2 times with a remainder of 319.
The next digit of our result is 2. 
Result so far: 112.0
The remainder is 319 after subtracting 1542 from 1861.
Take the next digit (5) from the dividend and append it to 319, then repeat: 3195 / 771

On to step 6:
If we divide 3195 by 771, we get 4 and a remainder of 111.
Put 4 as the next digit of the answer. 
Result so far: 1124.0
The remainder is 111 after subtracting 3084 from 3195.
Append the next digit (9) from the dividend to 111 and continue with: 1119 / 771

Step 7:
771 can be fit into 1119 1 times, resulting in a remainder of 348.
The next digit of our result is 1. 
Result so far: 11241.0
Subtracting 771 from 1119 leaves us with 348.
Bring next digit (8) of the dividend behind the 348 and repeat the process: 3488 / 771

Step 8:
3488 divided by 771 is 4 with a remainder of 404.
Record the quotient 4 as the next digit in the result. 
Result so far: 112414.0
If we take 3084 away from 3488, we end up with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Let's proceed to step 9:
When dividing 4040 by 771, we get 5 with a remainder of 185.
Record the quotient 5 as the next digit in the result. 
Result so far: 112414.5
Subtract 3855 from 4040 to get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Moving on to step 10:
771 goes into 1850 2 times with a remainder of 308.
Use 2 as the next digit of our solution. 
Result so far: 112414.52
If we subtract 1542 from 1850, we get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Step 11:
771 goes into 3080 3 times with a remainder of 767.
The next digit of our result is 3. 
Result so far: 112414.523
Subtracting 2313 from 3080 leaves us with 767.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7670, and continue the process.

Going ahead to step 12:
7670 divided by 771 is 9 with a remainder of 731.
The next digit of our result is 9. 
Result so far: 112414.5239
Subtracting 6939 from 7670 leaves us with 731.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7310, and continue the process.

On to step 13:
7310 divided by 771 is 9 with a remainder of 371.
The number 9 becomes the next digit in our result. 
Result so far: 112414.52399
If we subtract 6939 from 7310, we get 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

The final result is 112414.52399 with a remainder of 0.000371.