We're dividing 399005 by 99 
We want to figure out the number of times 399005 can be divided by 99.

Step 1:
3 divided by 99 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 99

Let's proceed to step 2:
When dividing 39 by 99, we get 0 with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 99

Advancing to step 3:
If we divide 399 by 99, we get 4 and a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 396 away from 399, we end up with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 99

Advancing to step 4:
The number 99 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Subtract 0 from 30 to get 30.
Include the next digit (0) from the dividend after 30, then repeat: 300 / 99

Step 5:
If we divide 300 by 99, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 403.0
If we subtract 297 from 300, we get 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 99

Going ahead to step 6:
99 can be fit into 35 0 times, resulting in a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 4030.0
Subtracting 0 from 35 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 7:
350 divided by 99 is 3 with a remainder of 53.
Put 3 as the next digit of the answer. 
Result so far: 4030.3
Deduct 297 from 350 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 8:
530 divided by 99 is 5 with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 4030.35
The remainder is 35 after subtracting 495 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 9:
When dividing 350 by 99, we get 3 with a remainder of 53.
The number 3 becomes the next digit in our result. 
Result so far: 4030.353
The remainder is 53 after subtracting 297 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 10:
99 can be fit into 530 5 times, resulting in a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 4030.3535
Deduct 495 from 530 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 11:
99 goes into 350 3 times with a remainder of 53.
Record the quotient 3 as the next digit in the result. 
Result so far: 4030.35353
Subtract 297 from 350 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 12:
99 can be fit into 530 5 times, resulting in a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 4030.353535
Deduct 495 from 530 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 13:
99 goes into 350 3 times with a remainder of 53.
Write down 3 as next digit of the result. 
Result so far: 4030.3535353
The remainder is 53 after subtracting 297 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 14:
530 divided by 99 is 5 with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 4030.35353535
The remainder is 35 after subtracting 495 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 4030.35353535, with a leftover of 3.5e-08.