399558 divided by 84 
We want to divide 399558 by 84.

Advancing to step 1:
84 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
Deduct 0 from 3 and we're left with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 84

Moving on to step 2:
84 can be fit into 39 0 times, resulting in a remainder of 39.
The number 0 becomes the next digit in our result. 
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 / 84

Going ahead to step 3:
The number 84 fits into 399 4 times, leaving a remainder of 63.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 63 after subtracting 336 from 399.
Append the next digit (5) from the dividend to 63 and continue with: 635 / 84

Advancing to step 4:
84 goes into 635 7 times with a remainder of 47.
The next digit of our result is 7. 
Result so far: 47.0
If we take 588 away from 635, we end up with 47.
Append the next digit (5) from the dividend to 47 and continue with: 475 / 84

Going ahead to step 5:
The number 84 fits into 475 5 times, leaving a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 475.0
Deduct 420 from 475 and we're left with 55.
Fetch the next digit (8) from the dividend, attach it to 55 and continue: 558 / 84

On to step 6:
84 can be fit into 558 6 times, resulting in a remainder of 54.
Put 6 as the next digit of the answer. 
Result so far: 4756.0
The remainder is 54 after subtracting 504 from 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 7:
84 can be fit into 540 6 times, resulting in a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 4756.6
If we subtract 504 from 540, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
84 can be fit into 360 4 times, resulting in a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 4756.64
If we subtract 336 from 360, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
The number 84 fits into 240 2 times, leaving a remainder of 72.
The next digit of our result is 2. 
Result so far: 4756.642
Deduct 168 from 240 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 10:
When dividing 720 by 84, we get 8 with a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 4756.6428
Deduct 672 from 720 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
When dividing 480 by 84, we get 5 with a remainder of 60.
The next digit of our result is 5. 
Result so far: 4756.64285
Subtracting 420 from 480 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 12:
84 can be fit into 600 7 times, resulting in a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 4756.642857
If we subtract 588 from 600, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
84 goes into 120 1 times with a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 4756.6428571
Deduct 84 from 120 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 14:
The number 84 fits into 360 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 4756.64285714
If we take 336 away from 360, we end up 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.

The final result is 4756.64285714 with a remainder of 2.4e-08.