We're dividing 391910 by 99 
Our goal is to divide 391910 by 99.

Going ahead to step 1:
When dividing 3 by 99, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 99

On to step 2:
99 can be fit into 39 0 times, resulting in a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 99

Step 3:
391 divided by 99 is 3 with a remainder of 94.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 297 from 391 and we're left with 94.
Take the next digit (9) from the dividend and append it to 94, then repeat: 949 / 99

Going ahead to step 4:
99 goes into 949 9 times with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 39.0
The remainder is 58 after subtracting 891 from 949.
Take the next digit (1) from the dividend and append it to 58, then repeat: 581 / 99

On to step 5:
If we divide 581 by 99, we get 5 and a remainder of 86.
Use 5 as the next digit of our solution. 
Result so far: 395.0
If we take 495 away from 581, we end up with 86.
Take the next digit (0) from the dividend and append it to 86, then repeat: 860 / 99

Step 6:
When dividing 860 by 99, we get 8 with a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 3958.0
Subtract 792 from 860 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 7:
680 divided by 99 is 6 with a remainder of 86.
Write down 6 as next digit of the result. 
Result so far: 3958.6
If we subtract 594 from 680, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 8:
99 goes into 860 8 times with a remainder of 68.
Record the quotient 8 as the next digit in the result. 
Result so far: 3958.68
If we subtract 792 from 860, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 9:
The number 99 fits into 680 6 times, leaving a remainder of 86.
Use 6 as the next digit of our solution. 
Result so far: 3958.686
Subtract 594 from 680 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 10:
The number 99 fits into 860 8 times, leaving a remainder of 68.
The next digit of our result is 8. 
Result so far: 3958.6868
Deduct 792 from 860 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 11:
680 divided by 99 is 6 with a remainder of 86.
The number 6 becomes the next digit in our result. 
Result so far: 3958.68686
Subtract 594 from 680 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Moving on to step 12:
99 goes into 860 8 times with a remainder of 68.
Put 8 as the next digit of the answer. 
Result so far: 3958.686868
Deduct 792 from 860 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 13:
The number 99 fits into 680 6 times, leaving a remainder of 86.
The next digit of our result is 6. 
Result so far: 3958.6868686
Deduct 594 from 680 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 14:
When dividing 860 by 99, we get 8 with a remainder of 68.
The number 8 becomes the next digit in our result. 
Result so far: 3958.68686868
Deduct 792 from 860 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final result is 3958.68686868 with a remainder of 6.8e-08.