399909 ÷ 83 
Our goal is to divide 399909 by 83.

Let's proceed to step 1:
83 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 83

Let's proceed to step 2:
83 can be fit into 39 0 times, resulting in a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 83

Moving on to step 3:
399 divided by 83 is 4 with a remainder of 67.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 332 from 399 to get 67.
Fetch the next digit (9) from the dividend, attach it to 67 and continue: 679 / 83

Step 4:
679 divided by 83 is 8 with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Deduct 664 from 679 and we're left with 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 83

On to step 5:
83 can be fit into 150 1 times, resulting in a remainder of 67.
The number 1 becomes the next digit in our result. 
Result so far: 481.0
Deduct 83 from 150 and we're left with 67.
Grab the next digit (9) from the dividend, add it to 67, then carry on: 679 / 83

Going ahead to step 6:
83 can be fit into 679 8 times, resulting in a remainder of 15.
The next digit of our result is 8. 
Result so far: 4818.0
Deduct 664 from 679 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
83 can be fit into 150 1 times, resulting in a remainder of 67.
Write down 1 as next digit of the result. 
Result so far: 4818.1
Subtracting 83 from 150 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 8:
83 can be fit into 670 8 times, resulting in a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 4818.18
The remainder is 6 after subtracting 664 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
When dividing 60 by 83, we get 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 4818.18
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 10:
If we divide 600 by 83, we get 7 and a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 4818.1807
If we take 581 away from 600, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 11:
The number 83 fits into 190 2 times, leaving a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 4818.18072
Subtracting 166 from 190 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
The number 83 fits into 240 2 times, leaving a remainder of 74.
Write down 2 as next digit of the result. 
Result so far: 4818.180722
If we take 166 away from 240, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

After the division, we end up with 4818.180722 and a remainder of 7.4e-06.