Let's divide 39801978 by 256
We want to divide 39801978 by 256.

Moving on to step 1:
256 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 256

On to step 2:
256 can be fit into 39 0 times, resulting in a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Take the next digit (8) from the dividend and append it to 39, then repeat: 398 / 256

Advancing to step 3:
When dividing 398 by 256, we get 1 with a remainder of 142.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 256 away from 398, we end up with 142.
Append the next digit (0) from the dividend to 142 and continue with: 1420 / 256

Going ahead to step 4:
1420 divided by 256 is 5 with a remainder of 140.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtract 1280 from 1420 to get 140.
Take the next digit (1) from the dividend and append it to 140, then repeat: 1401 / 256

Moving on to step 5:
1401 divided by 256 is 5 with a remainder of 121.
Put 5 as the next digit of the answer. 
Result so far: 155.0
If we take 1280 away from 1401, we end up with 121.
Bring next digit (9) of the dividend behind the 121 and repeat the process: 1219 / 256

Going ahead to step 6:
1219 divided by 256 is 4 with a remainder of 195.
Put 4 as the next digit of the answer. 
Result so far: 1554.0
Subtracting 1024 from 1219 leaves us with 195.
Take the next digit (7) from the dividend and append it to 195, then repeat: 1957 / 256

On to step 7:
256 can be fit into 1957 7 times, resulting in a remainder of 165.
Write down 7 as next digit of the result. 
Result so far: 15547.0
Subtract 1792 from 1957 to get 165.
Append the next digit (8) from the dividend to 165 and continue with: 1658 / 256

Moving on to step 8:
The number 256 fits into 1658 6 times, leaving a remainder of 122.
Write down 6 as next digit of the result. 
Result so far: 155476.0
Subtract 1536 from 1658 to get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Step 9:
The number 256 fits into 1220 4 times, leaving a remainder of 196.
Record the quotient 4 as the next digit in the result. 
Result so far: 155476.4
If we subtract 1024 from 1220, we get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

On to step 10:
256 goes into 1960 7 times with a remainder of 168.
Write down 7 as next digit of the result. 
Result so far: 155476.47
If we take 1792 away from 1960, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 11:
When dividing 1680 by 256, we get 6 with a remainder of 144.
Use 6 as the next digit of our solution. 
Result so far: 155476.476
If we subtract 1536 from 1680, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Let's proceed to step 12:
256 goes into 1440 5 times with a remainder of 160.
The number 5 becomes the next digit in our result. 
Result so far: 155476.4765
The remainder is 160 after subtracting 1280 from 1440.
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:
When dividing 1600 by 256, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 155476.47656
The remainder is 64 after subtracting 1536 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 14:
256 goes into 640 2 times with a remainder of 128.
Put 2 as the next digit of the answer. 
Result so far: 155476.476562
Subtract 512 from 640 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 15:
If we divide 1280 by 256, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 155476.4765625
Subtract 1280 from 1280 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 16:
0 divided by 256 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 155476.4765625
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 155476.4765625, with a leftover of 0.0.