We look at the division of 339023 by 84 
We want to figure out the number of times 339023 can be divided by 84.

On to step 1:
84 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 84

Going ahead to step 2:
84 goes into 33 0 times with a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 33 and we're left with 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 84

Advancing to step 3:
84 can be fit into 339 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 336 away from 339, we end up with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 84

Going ahead to step 4:
84 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 40.0
The remainder is 30 after subtracting 0 from 30.
Include the next digit (2) from the dividend after 30, then repeat: 302 / 84

Moving on to step 5:
If we divide 302 by 84, we get 3 and a remainder of 50.
The next digit of our result is 3. 
Result so far: 403.0
Deduct 252 from 302 and we're left with 50.
Grab the next digit (3) from the dividend, add it to 50, then carry on: 503 / 84

On to step 6:
The number 84 fits into 503 5 times, leaving a remainder of 83.
Record the quotient 5 as the next digit in the result. 
Result so far: 4035.0
Subtract 420 from 503 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 7:
When dividing 830 by 84, we get 9 with a remainder of 74.
Put 9 as the next digit of the answer. 
Result so far: 4035.9
The remainder is 74 after subtracting 756 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 8:
84 goes into 740 8 times with a remainder of 68.
The next digit of our result is 8. 
Result so far: 4035.98
Subtract 672 from 740 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 9:
If we divide 680 by 84, we get 8 and a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 4035.988
Deduct 672 from 680 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 4035.988, with a leftover of 0.0008.