Let's divide 12971391 by 249
Our goal is to divide 12971391 by 249.

Advancing to step 1:
When dividing 1 by 249, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 249

Moving on to step 2:
249 goes into 12 0 times with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 249

On to step 3:
When dividing 129 by 249, we get 0 with a remainder of 129.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 129 leaves us with 129.
Append the next digit (7) from the dividend to 129 and continue with: 1297 / 249

Step 4:
When dividing 1297 by 249, we get 5 with a remainder of 52.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 52 after subtracting 1245 from 1297.
Include the next digit (1) from the dividend after 52, then repeat: 521 / 249

Advancing to step 5:
The number 249 fits into 521 2 times, leaving a remainder of 23.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
If we take 498 away from 521, we end up with 23.
Append the next digit (3) from the dividend to 23 and continue with: 233 / 249

On to step 6:
249 can be fit into 233 0 times, resulting in a remainder of 233.
The number 0 becomes the next digit in our result. 
Result so far: 520.0
If we take 0 away from 233, we end up with 233.
Grab the next digit (9) from the dividend, add it to 233, then carry on: 2339 / 249

Moving on to step 7:
The number 249 fits into 2339 9 times, leaving a remainder of 98.
Put 9 as the next digit of the answer. 
Result so far: 5209.0
The remainder is 98 after subtracting 2241 from 2339.
Append the next digit (1) from the dividend to 98 and continue with: 981 / 249

Let's proceed to step 8:
249 goes into 981 3 times with a remainder of 234.
Use 3 as the next digit of our solution. 
Result so far: 52093.0
Deduct 747 from 981 and we're left with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Step 9:
When dividing 2340 by 249, we get 9 with a remainder of 99.
Put 9 as the next digit of the answer. 
Result so far: 52093.9
If we subtract 2241 from 2340, we get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

On to step 10:
When dividing 990 by 249, we get 3 with a remainder of 243.
Use 3 as the next digit of our solution. 
Result so far: 52093.93
If we subtract 747 from 990, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Moving on to step 11:
The number 249 fits into 2430 9 times, leaving a remainder of 189.
The next digit of our result is 9. 
Result so far: 52093.939
If we take 2241 away from 2430, we end up with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Going ahead to step 12:
If we divide 1890 by 249, we get 7 and a remainder of 147.
The number 7 becomes the next digit in our result. 
Result so far: 52093.9397
If we take 1743 away from 1890, we end up with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

On to step 13:
When dividing 1470 by 249, we get 5 with a remainder of 225.
Use 5 as the next digit of our solution. 
Result so far: 52093.93975
Subtracting 1245 from 1470 leaves us with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 14:
249 can be fit into 2250 9 times, resulting in a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 52093.939759
Deduct 2241 from 2250 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 15:
The number 249 fits into 90 0 times, leaving a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 52093.939759
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 16:
If we divide 900 by 249, we get 3 and a remainder of 153.
The next digit of our result is 3. 
Result so far: 52093.93975903
The remainder is 153 after subtracting 747 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

The quotient of the division is 52093.93975903, and the remainder is 1.53e-07.