11515821 divided by 391 
We want to divide 11515821 by 391.

Moving on to step 1:
391 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 391

Step 2:
391 can be fit into 11 0 times, resulting in a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 11 leaves us with 11.
Fetch the next digit (5) from the dividend, attach it to 11 and continue: 115 / 391

Let's proceed to step 3:
391 goes into 115 0 times with a remainder of 115.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 115, we end up with 115.
Take the next digit (1) from the dividend and append it to 115, then repeat: 1151 / 391

Moving on to step 4:
When dividing 1151 by 391, we get 2 with a remainder of 369.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 369 after subtracting 782 from 1151.
Bring next digit (5) of the dividend behind the 369 and repeat the process: 3695 / 391

On to step 5:
The number 391 fits into 3695 9 times, leaving a remainder of 176.
Put 9 as the next digit of the answer. 
Result so far: 29.0
If we subtract 3519 from 3695, we get 176.
Fetch the next digit (8) from the dividend, attach it to 176 and continue: 1768 / 391

Going ahead to step 6:
391 can be fit into 1768 4 times, resulting in a remainder of 204.
The number 4 becomes the next digit in our result. 
Result so far: 294.0
If we take 1564 away from 1768, we end up with 204.
Include the next digit (2) from the dividend after 204, then repeat: 2042 / 391

Let's proceed to step 7:
391 goes into 2042 5 times with a remainder of 87.
The next digit of our result is 5. 
Result so far: 2945.0
The remainder is 87 after subtracting 1955 from 2042.
Grab the next digit (1) from the dividend, add it to 87, then carry on: 871 / 391

Going ahead to step 8:
If we divide 871 by 391, we get 2 and a remainder of 89.
Record the quotient 2 as the next digit in the result. 
Result so far: 29452.0
If we subtract 782 from 871, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 9:
The number 391 fits into 890 2 times, leaving a remainder of 108.
Write down 2 as next digit of the result. 
Result so far: 29452.2
Subtracting 782 from 890 leaves us with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Let's proceed to step 10:
If we divide 1080 by 391, we get 2 and a remainder of 298.
Write down 2 as next digit of the result. 
Result so far: 29452.22
If we subtract 782 from 1080, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

The final result is 29452.22 with a remainder of 0.298.