20120356 ÷ 255 
We want to figure out the number of times 20120356 can be divided by 255.

On to step 1:
The number 255 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 255

Moving on to step 2:
20 divided by 255 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 255

Going ahead to step 3:
201 divided by 255 is 0 with a remainder of 201.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 201 and we're left with 201.
Append the next digit (2) from the dividend to 201 and continue with: 2012 / 255

Going ahead to step 4:
If we divide 2012 by 255, we get 7 and a remainder of 227.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 1785 from 2012, we get 227.
Bring next digit (0) of the dividend behind the 227 and repeat the process: 2270 / 255

Advancing to step 5:
255 goes into 2270 8 times with a remainder of 230.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
Deduct 2040 from 2270 and we're left with 230.
Fetch the next digit (3) from the dividend, attach it to 230 and continue: 2303 / 255

Advancing to step 6:
2303 divided by 255 is 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 789.0
Subtract 2295 from 2303 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 255

Moving on to step 7:
255 goes into 85 0 times with a remainder of 85.
The next digit of our result is 0. 
Result so far: 7890.0
Subtracting 0 from 85 leaves us with 85.
Bring next digit (6) of the dividend behind the 85 and repeat the process: 856 / 255

Let's proceed to step 8:
255 can be fit into 856 3 times, resulting in a remainder of 91.
The next digit of our result is 3. 
Result so far: 78903.0
If we subtract 765 from 856, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Advancing to step 9:
255 can be fit into 910 3 times, resulting in a remainder of 145.
The next digit of our result is 3. 
Result so far: 78903.3
If we subtract 765 from 910, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Moving on to step 10:
1450 divided by 255 is 5 with a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 78903.35
Deduct 1275 from 1450 and we're left with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Going ahead to step 11:
When dividing 1750 by 255, we get 6 with a remainder of 220.
The next digit of our result is 6. 
Result so far: 78903.356
Subtract 1530 from 1750 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 12:
2200 divided by 255 is 8 with a remainder of 160.
Use 8 as the next digit of our solution. 
Result so far: 78903.3568
Subtract 2040 from 2200 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 13:
If we divide 1600 by 255, we get 6 and a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 78903.35686
Subtracting 1530 from 1600 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 14:
When dividing 700 by 255, we get 2 with a remainder of 190.
The number 2 becomes the next digit in our result. 
Result so far: 78903.356862
If we subtract 510 from 700, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Advancing to step 15:
If we divide 1900 by 255, we get 7 and a remainder of 115.
Record the quotient 7 as the next digit in the result. 
Result so far: 78903.3568627
Deduct 1785 from 1900 and we're left with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 16:
If we divide 1150 by 255, we get 4 and a remainder of 130.
Use 4 as the next digit of our solution. 
Result so far: 78903.35686274
The remainder is 130 after subtracting 1020 from 1150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

In conclusion, the division gives 78903.35686274 with a balance of 1.3e-07.