5775081 ÷ 399 
Let's see how many times 399 fits into 5775081.

Step 1:
399 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 399

Moving on to step 2:
399 can be fit into 57 0 times, resulting in a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Include the next digit (7) from the dividend after 57, then repeat: 577 / 399

Step 3:
If we divide 577 by 399, we get 1 and a remainder of 178.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 399 from 577, we get 178.
Grab the next digit (5) from the dividend, add it to 178, then carry on: 1785 / 399

Going ahead to step 4:
When dividing 1785 by 399, we get 4 with a remainder of 189.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Subtracting 1596 from 1785 leaves us with 189.
Include the next digit (0) from the dividend after 189, then repeat: 1890 / 399

Step 5:
The number 399 fits into 1890 4 times, leaving a remainder of 294.
Write down 4 as next digit of the result. 
Result so far: 144.0
The remainder is 294 after subtracting 1596 from 1890.
Take the next digit (8) from the dividend and append it to 294, then repeat: 2948 / 399

Let's proceed to step 6:
2948 divided by 399 is 7 with a remainder of 155.
Put 7 as the next digit of the answer. 
Result so far: 1447.0
The remainder is 155 after subtracting 2793 from 2948.
Include the next digit (1) from the dividend after 155, then repeat: 1551 / 399

Advancing to step 7:
1551 divided by 399 is 3 with a remainder of 354.
The number 3 becomes the next digit in our result. 
Result so far: 14473.0
Subtract 1197 from 1551 to get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

On to step 8:
399 goes into 3540 8 times with a remainder of 348.
The next digit of our result is 8. 
Result so far: 14473.8
Subtracting 3192 from 3540 leaves us with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 9:
If we divide 3480 by 399, we get 8 and a remainder of 288.
The next digit of our result is 8. 
Result so far: 14473.88
If we take 3192 away from 3480, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

The quotient of the division is 14473.88, and the remainder is 0.288.