31123875 ÷ 256 
We want to figure out the number of times 31123875 can be divided by 256.

Going ahead to step 1:
The number 256 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 256

Step 2:
If we divide 31 by 256, we get 0 and a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Grab the next digit (1) from the dividend, add it to 31, then carry on: 311 / 256

Advancing to step 3:
When dividing 311 by 256, we get 1 with a remainder of 55.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 256 away from 311, we end up with 55.
Take the next digit (2) from the dividend and append it to 55, then repeat: 552 / 256

Advancing to step 4:
552 divided by 256 is 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 40 after subtracting 512 from 552.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 256

On to step 5:
The number 256 fits into 403 1 times, leaving a remainder of 147.
The next digit of our result is 1. 
Result so far: 121.0
If we take 256 away from 403, we end up with 147.
Take the next digit (8) from the dividend and append it to 147, then repeat: 1478 / 256

Step 6:
If we divide 1478 by 256, we get 5 and a remainder of 198.
Put 5 as the next digit of the answer. 
Result so far: 1215.0
Subtracting 1280 from 1478 leaves us with 198.
Grab the next digit (7) from the dividend, add it to 198, then carry on: 1987 / 256

Let's proceed to step 7:
256 can be fit into 1987 7 times, resulting in a remainder of 195.
Record the quotient 7 as the next digit in the result. 
Result so far: 12157.0
The remainder is 195 after subtracting 1792 from 1987.
Fetch the next digit (5) from the dividend, attach it to 195 and continue: 1955 / 256

On to step 8:
256 goes into 1955 7 times with a remainder of 163.
Put 7 as the next digit of the answer. 
Result so far: 121577.0
Deduct 1792 from 1955 and we're left with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

On to step 9:
The number 256 fits into 1630 6 times, leaving a remainder of 94.
The number 6 becomes the next digit in our result. 
Result so far: 121577.6
Subtract 1536 from 1630 to get 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Step 10:
940 divided by 256 is 3 with a remainder of 172.
Use 3 as the next digit of our solution. 
Result so far: 121577.63
If we take 768 away from 940, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

On to step 11:
When dividing 1720 by 256, we get 6 with a remainder of 184.
Put 6 as the next digit of the answer. 
Result so far: 121577.636
Deduct 1536 from 1720 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Going ahead to step 12:
256 goes into 1840 7 times with a remainder of 48.
Record the quotient 7 as the next digit in the result. 
Result so far: 121577.6367
Subtract 1792 from 1840 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 13:
480 divided by 256 is 1 with a remainder of 224.
The next digit of our result is 1. 
Result so far: 121577.63671
Subtract 256 from 480 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 14:
When dividing 2240 by 256, we get 8 with a remainder of 192.
Record the quotient 8 as the next digit in the result. 
Result so far: 121577.636718
Subtract 2048 from 2240 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Advancing to step 15:
The number 256 fits into 1920 7 times, leaving a remainder of 128.
Write down 7 as next digit of the result. 
Result so far: 121577.6367187
The remainder is 128 after subtracting 1792 from 1920.
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 16:
The number 256 fits into 1280 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 121577.63671875
The remainder is 0 after subtracting 1280 from 1280.
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 121577.63671875, with a leftover of 0.0.