We're dividing 8606418 by 391 
We want to divide 8606418 by 391.

Going ahead to step 1:
When dividing 8 by 391, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 391

Moving on to step 2:
If we divide 86 by 391, we get 0 and a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Fetch the next digit (0) from the dividend, attach it to 86 and continue: 860 / 391

Moving on to step 3:
The number 391 fits into 860 2 times, leaving a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 782 away from 860, we end up with 78.
Include the next digit (6) from the dividend after 78, then repeat: 786 / 391

Advancing to step 4:
The number 391 fits into 786 2 times, leaving a remainder of 4.
The next digit of our result is 2. 
Result so far: 22.0
Subtracting 782 from 786 leaves us with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 391

Moving on to step 5:
391 can be fit into 44 0 times, resulting in a remainder of 44.
Put 0 as the next digit of the answer. 
Result so far: 220.0
The remainder is 44 after subtracting 0 from 44.
Append the next digit (1) from the dividend to 44 and continue with: 441 / 391

Advancing to step 6:
The number 391 fits into 441 1 times, leaving a remainder of 50.
Put 1 as the next digit of the answer. 
Result so far: 2201.0
Subtracting 391 from 441 leaves us with 50.
Include the next digit (8) from the dividend after 50, then repeat: 508 / 391

Going ahead to step 7:
The number 391 fits into 508 1 times, leaving a remainder of 117.
Record the quotient 1 as the next digit in the result. 
Result so far: 22011.0
The remainder is 117 after subtracting 391 from 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 8:
391 can be fit into 1170 2 times, resulting in a remainder of 388.
Put 2 as the next digit of the answer. 
Result so far: 22011.2
Deduct 782 from 1170 and we're left with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Going ahead to step 9:
391 goes into 3880 9 times with a remainder of 361.
The number 9 becomes the next digit in our result. 
Result so far: 22011.29
If we subtract 3519 from 3880, we get 361.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

Moving on to step 10:
When dividing 3610 by 391, we get 9 with a remainder of 91.
The next digit of our result is 9. 
Result so far: 22011.299
The remainder is 91 after subtracting 3519 from 3610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Our division results in 22011.299 with a remaining 0.0091.