84639419 ÷ 823 
We're looking to find how many times 823 goes into 84639419.

Going ahead to step 1:
8 divided by 823 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 823

On to step 2:
823 goes into 84 0 times with a remainder of 84.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Bring next digit (6) of the dividend behind the 84 and repeat the process: 846 / 823

Step 3:
When dividing 846 by 823, we get 1 with a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 823 from 846, we get 23.
Fetch the next digit (3) from the dividend, attach it to 23 and continue: 233 / 823

Step 4:
When dividing 233 by 823, we get 0 with a remainder of 233.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 233 leaves us with 233.
Take the next digit (9) from the dividend and append it to 233, then repeat: 2339 / 823

Moving on to step 5:
If we divide 2339 by 823, we get 2 and a remainder of 693.
The next digit of our result is 2. 
Result so far: 102.0
If we take 1646 away from 2339, we end up with 693.
Include the next digit (4) from the dividend after 693, then repeat: 6934 / 823

Moving on to step 6:
823 goes into 6934 8 times with a remainder of 350.
Use 8 as the next digit of our solution. 
Result so far: 1028.0
Subtracting 6584 from 6934 leaves us with 350.
Take the next digit (1) from the dividend and append it to 350, then repeat: 3501 / 823

On to step 7:
3501 divided by 823 is 4 with a remainder of 209.
Write down 4 as next digit of the result. 
Result so far: 10284.0
Deduct 3292 from 3501 and we're left with 209.
Include the next digit (9) from the dividend after 209, then repeat: 2099 / 823

Let's proceed to step 8:
The number 823 fits into 2099 2 times, leaving a remainder of 453.
The number 2 becomes the next digit in our result. 
Result so far: 102842.0
Deduct 1646 from 2099 and we're left with 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

On to step 9:
823 can be fit into 4530 5 times, resulting in a remainder of 415.
Use 5 as the next digit of our solution. 
Result so far: 102842.5
Subtracting 4115 from 4530 leaves us with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Advancing to step 10:
4150 divided by 823 is 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 102842.55
Deduct 4115 from 4150 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.

In conclusion, the division gives 102842.55 with a balance of 0.035.