Let's divide 99992989 by 391
Our goal is to divide 99992989 by 391.

Going ahead to step 1:
391 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 391

Step 2:
99 divided by 391 is 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Fetch the next digit (9) from the dividend, attach it to 99 and continue: 999 / 391

Advancing to step 3:
When dividing 999 by 391, we get 2 with a remainder of 217.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 782 from 999 to get 217.
Bring next digit (9) of the dividend behind the 217 and repeat the process: 2179 / 391

Advancing to step 4:
The number 391 fits into 2179 5 times, leaving a remainder of 224.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtract 1955 from 2179 to get 224.
Grab the next digit (2) from the dividend, add it to 224, then carry on: 2242 / 391

Let's proceed to step 5:
The number 391 fits into 2242 5 times, leaving a remainder of 287.
Record the quotient 5 as the next digit in the result. 
Result so far: 255.0
Subtract 1955 from 2242 to get 287.
Include the next digit (9) from the dividend after 287, then repeat: 2879 / 391

Advancing to step 6:
2879 divided by 391 is 7 with a remainder of 142.
Use 7 as the next digit of our solution. 
Result so far: 2557.0
If we subtract 2737 from 2879, we get 142.
Take the next digit (8) from the dividend and append it to 142, then repeat: 1428 / 391

Step 7:
391 can be fit into 1428 3 times, resulting in a remainder of 255.
The number 3 becomes the next digit in our result. 
Result so far: 25573.0
Subtracting 1173 from 1428 leaves us with 255.
Take the next digit (9) from the dividend and append it to 255, then repeat: 2559 / 391

Let's proceed to step 8:
391 goes into 2559 6 times with a remainder of 213.
Put 6 as the next digit of the answer. 
Result so far: 255736.0
If we subtract 2346 from 2559, we get 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Step 9:
If we divide 2130 by 391, we get 5 and a remainder of 175.
Put 5 as the next digit of the answer. 
Result so far: 255736.5
The remainder is 175 after subtracting 1955 from 2130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

On to step 10:
When dividing 1750 by 391, we get 4 with a remainder of 186.
Write down 4 as next digit of the result. 
Result so far: 255736.54
The remainder is 186 after subtracting 1564 from 1750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

On to step 11:
391 can be fit into 1860 4 times, resulting in a remainder of 296.
Record the quotient 4 as the next digit in the result. 
Result so far: 255736.544
Subtracting 1564 from 1860 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

The quotient of the division is 255736.544, and the remainder is 0.0296.