Let's divide 7999058 by 391
Our goal is to divide 7999058 by 391.

Step 1:
If we divide 7 by 391, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 391

Advancing to step 2:
391 goes into 79 0 times with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Append the next digit (9) from the dividend to 79 and continue with: 799 / 391

Moving on to step 3:
If we divide 799 by 391, we get 2 and a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 782 from 799 and we're left with 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 391

Going ahead to step 4:
The number 391 fits into 179 0 times, leaving a remainder of 179.
The next digit of our result is 0. 
Result so far: 20.0
Subtract 0 from 179 to get 179.
Fetch the next digit (0) from the dividend, attach it to 179 and continue: 1790 / 391

Advancing to step 5:
The number 391 fits into 1790 4 times, leaving a remainder of 226.
Use 4 as the next digit of our solution. 
Result so far: 204.0
If we take 1564 away from 1790, we end up with 226.
Take the next digit (5) from the dividend and append it to 226, then repeat: 2265 / 391

Step 6:
The number 391 fits into 2265 5 times, leaving a remainder of 310.
Use 5 as the next digit of our solution. 
Result so far: 2045.0
Deduct 1955 from 2265 and we're left with 310.
Append the next digit (8) from the dividend to 310 and continue with: 3108 / 391

On to step 7:
If we divide 3108 by 391, we get 7 and a remainder of 371.
The next digit of our result is 7. 
Result so far: 20457.0
Deduct 2737 from 3108 and we're left with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Step 8:
3710 divided by 391 is 9 with a remainder of 191.
The next digit of our result is 9. 
Result so far: 20457.9
If we subtract 3519 from 3710, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 9:
1910 divided by 391 is 4 with a remainder of 346.
The number 4 becomes the next digit in our result. 
Result so far: 20457.94
Deduct 1564 from 1910 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Step 10:
The number 391 fits into 3460 8 times, leaving a remainder of 332.
Record the quotient 8 as the next digit in the result. 
Result so far: 20457.948
Deduct 3128 from 3460 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Advancing to step 11:
391 can be fit into 3320 8 times, resulting in a remainder of 192.
The number 8 becomes the next digit in our result. 
Result so far: 20457.9488
If we subtract 3128 from 3320, we get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The final outcome is 20457.9488, with a leftover of 0.00192.