We're dividing 99858645 by 128 
Let's see how many times 128 fits into 99858645.

Going ahead to step 1:
When dividing 9 by 128, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 128

Step 2:
When dividing 99 by 128, we get 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Bring next digit (8) of the dividend behind the 99 and repeat the process: 998 / 128

On to step 3:
If we divide 998 by 128, we get 7 and a remainder of 102.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 896 from 998, we get 102.
Take the next digit (5) from the dividend and append it to 102, then repeat: 1025 / 128

Advancing to step 4:
128 goes into 1025 8 times with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
If we take 1024 away from 1025, we end up with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 128

Going ahead to step 5:
128 goes into 18 0 times with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 780.0
Deduct 0 from 18 and we're left with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 128

Going ahead to step 6:
If we divide 186 by 128, we get 1 and a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 7801.0
If we take 128 away from 186, we end up with 58.
Grab the next digit (4) from the dividend, add it to 58, then carry on: 584 / 128

Advancing to step 7:
128 can be fit into 584 4 times, resulting in a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 78014.0
If we take 512 away from 584, we end up with 72.
Take the next digit (5) from the dividend and append it to 72, then repeat: 725 / 128

Advancing to step 8:
128 can be fit into 725 5 times, resulting in a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 780145.0
Subtract 640 from 725 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 9:
If we divide 850 by 128, we get 6 and a remainder of 82.
Record the quotient 6 as the next digit in the result. 
Result so far: 780145.6
Subtracting 768 from 850 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 10:
The number 128 fits into 820 6 times, leaving a remainder of 52.
Put 6 as the next digit of the answer. 
Result so far: 780145.66
The remainder is 52 after subtracting 768 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

In conclusion, the division gives 780145.66 with a balance of 0.052.