We're dividing 251231 by 80 
Our goal is to divide 251231 by 80.

Advancing to step 1:
80 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 80

Moving on to step 2:
25 divided by 80 is 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 80

Going ahead to step 3:
80 goes into 251 3 times with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 240 from 251 to get 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 80

Moving on to step 4:
80 goes into 112 1 times with a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 31.0
Subtract 80 from 112 to get 32.
Take the next digit (3) from the dividend and append it to 32, then repeat: 323 / 80

Step 5:
80 goes into 323 4 times with a remainder of 3.
The next digit of our result is 4. 
Result so far: 314.0
Subtracting 320 from 323 leaves us with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 80

Going ahead to step 6:
The number 80 fits into 31 0 times, leaving a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 3140.0
Subtract 0 from 31 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
If we divide 310 by 80, we get 3 and a remainder of 70.
Record the quotient 3 as the next digit in the result. 
Result so far: 3140.3
Subtract 240 from 310 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 8:
If we divide 700 by 80, we get 8 and a remainder of 60.
Record the quotient 8 as the next digit in the result. 
Result so far: 3140.38
Subtracting 640 from 700 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 9:
600 divided by 80 is 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 3140.387
If we subtract 560 from 600, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
80 goes into 400 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 3140.3875
Subtracting 400 from 400 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3140.3875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3140.3875
Subtract 0 from 0 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.

Our division results in 3140.3875 with a remaining 0.0.