42039042 divided by 256 
We want to figure out the number of times 42039042 can be divided by 256.

Advancing to step 1:
If we divide 4 by 256, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 256

On to step 2:
256 can be fit into 42 0 times, resulting in a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 256

Moving on to step 3:
256 can be fit into 420 1 times, resulting in a remainder of 164.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 256 away from 420, we end up with 164.
Include the next digit (3) from the dividend after 164, then repeat: 1643 / 256

Advancing to step 4:
When dividing 1643 by 256, we get 6 with a remainder of 107.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
The remainder is 107 after subtracting 1536 from 1643.
Append the next digit (9) from the dividend to 107 and continue with: 1079 / 256

Let's proceed to step 5:
256 goes into 1079 4 times with a remainder of 55.
The next digit of our result is 4. 
Result so far: 164.0
Deduct 1024 from 1079 and we're left with 55.
Fetch the next digit (0) from the dividend, attach it to 55 and continue: 550 / 256

Advancing to step 6:
When dividing 550 by 256, we get 2 with a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 1642.0
Subtracting 512 from 550 leaves us with 38.
Bring next digit (4) of the dividend behind the 38 and repeat the process: 384 / 256

Let's proceed to step 7:
384 divided by 256 is 1 with a remainder of 128.
Record the quotient 1 as the next digit in the result. 
Result so far: 16421.0
Subtracting 256 from 384 leaves us with 128.
Bring next digit (2) of the dividend behind the 128 and repeat the process: 1282 / 256

Moving on to step 8:
1282 divided by 256 is 5 with a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 164215.0
Deduct 1280 from 1282 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
256 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 164215.0
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
When dividing 200 by 256, we get 0 with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 164215.0
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

After the division, we end up with 164215.0 and a remainder of 0.2.