We look at the division of 10105996 by 391 
Let's see how many times 391 fits into 10105996.

On to step 1:
If we divide 1 by 391, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 391

Going ahead to step 2:
391 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Include the next digit (1) from the dividend after 10, then repeat: 101 / 391

Going ahead to step 3:
391 goes into 101 0 times with a remainder of 101.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 101 leaves us with 101.
Include the next digit (0) from the dividend after 101, then repeat: 1010 / 391

Moving on to step 4:
When dividing 1010 by 391, we get 2 with a remainder of 228.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 228 after subtracting 782 from 1010.
Grab the next digit (5) from the dividend, add it to 228, then carry on: 2285 / 391

Step 5:
If we divide 2285 by 391, we get 5 and a remainder of 330.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtracting 1955 from 2285 leaves us with 330.
Take the next digit (9) from the dividend and append it to 330, then repeat: 3309 / 391

On to step 6:
391 goes into 3309 8 times with a remainder of 181.
Write down 8 as next digit of the result. 
Result so far: 258.0
The remainder is 181 after subtracting 3128 from 3309.
Append the next digit (9) from the dividend to 181 and continue with: 1819 / 391

Moving on to step 7:
If we divide 1819 by 391, we get 4 and a remainder of 255.
The next digit of our result is 4. 
Result so far: 2584.0
The remainder is 255 after subtracting 1564 from 1819.
Include the next digit (6) from the dividend after 255, then repeat: 2556 / 391

On to step 8:
391 goes into 2556 6 times with a remainder of 210.
Put 6 as the next digit of the answer. 
Result so far: 25846.0
If we subtract 2346 from 2556, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 9:
The number 391 fits into 2100 5 times, leaving a remainder of 145.
Put 5 as the next digit of the answer. 
Result so far: 25846.5
Subtract 1955 from 2100 to get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 10:
391 goes into 1450 3 times with a remainder of 277.
Record the quotient 3 as the next digit in the result. 
Result so far: 25846.53
If we take 1173 away from 1450, we end up with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Advancing to step 11:
2770 divided by 391 is 7 with a remainder of 33.
The next digit of our result is 7. 
Result so far: 25846.537
The remainder is 33 after subtracting 2737 from 2770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 12:
If we divide 330 by 391, we get 0 and a remainder of 330.
Use 0 as the next digit of our solution. 
Result so far: 25846.537
Deduct 0 from 330 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 13:
391 goes into 3300 8 times with a remainder of 172.
Use 8 as the next digit of our solution. 
Result so far: 25846.53708
Subtract 3128 from 3300 to get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 14:
The number 391 fits into 1720 4 times, leaving a remainder of 156.
Put 4 as the next digit of the answer. 
Result so far: 25846.537084
Deduct 1564 from 1720 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Let's proceed to step 15:
When dividing 1560 by 391, we get 3 with a remainder of 387.
Use 3 as the next digit of our solution. 
Result so far: 25846.5370843
If we subtract 1173 from 1560, we get 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

On to step 16:
If we divide 3870 by 391, we get 9 and a remainder of 351.
The number 9 becomes the next digit in our result. 
Result so far: 25846.53708439
If we subtract 3519 from 3870, we get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

The final outcome is 25846.53708439, with a leftover of 3.51e-07.