12171248 ÷ 925 
Our goal is to divide 12171248 by 925.

Advancing to step 1:
925 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 925

On to step 2:
925 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 925

On to step 3:
If we divide 121 by 925, we get 0 and a remainder of 121.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 121 after subtracting 0 from 121.
Append the next digit (7) from the dividend to 121 and continue with: 1217 / 925

Step 4:
When dividing 1217 by 925, we get 1 with a remainder of 292.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 925 from 1217, we get 292.
Include the next digit (1) from the dividend after 292, then repeat: 2921 / 925

Advancing to step 5:
The number 925 fits into 2921 3 times, leaving a remainder of 146.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 2775 from 2921 to get 146.
Take the next digit (2) from the dividend and append it to 146, then repeat: 1462 / 925

Let's proceed to step 6:
925 goes into 1462 1 times with a remainder of 537.
Record the quotient 1 as the next digit in the result. 
Result so far: 131.0
Subtracting 925 from 1462 leaves us with 537.
Take the next digit (4) from the dividend and append it to 537, then repeat: 5374 / 925

Moving on to step 7:
5374 divided by 925 is 5 with a remainder of 749.
Write down 5 as next digit of the result. 
Result so far: 1315.0
The remainder is 749 after subtracting 4625 from 5374.
Take the next digit (8) from the dividend and append it to 749, then repeat: 7498 / 925

On to step 8:
925 can be fit into 7498 8 times, resulting in a remainder of 98.
Use 8 as the next digit of our solution. 
Result so far: 13158.0
Subtracting 7400 from 7498 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Moving on to step 9:
If we divide 980 by 925, we get 1 and a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 13158.1
Subtracting 925 from 980 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 10:
When dividing 550 by 925, we get 0 with a remainder of 550.
Use 0 as the next digit of our solution. 
Result so far: 13158.1
The remainder is 550 after subtracting 0 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

On to step 11:
5500 divided by 925 is 5 with a remainder of 875.
Put 5 as the next digit of the answer. 
Result so far: 13158.105
The remainder is 875 after subtracting 4625 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8750, and continue the process.

Step 12:
8750 divided by 925 is 9 with a remainder of 425.
The number 9 becomes the next digit in our result. 
Result so far: 13158.1059
Deduct 8325 from 8750 and we're left with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Let's proceed to step 13:
925 can be fit into 4250 4 times, resulting in a remainder of 550.
Write down 4 as next digit of the result. 
Result so far: 13158.10594
If we take 3700 away from 4250, we end up with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 14:
925 goes into 5500 5 times with a remainder of 875.
Put 5 as the next digit of the answer. 
Result so far: 13158.105945
Subtract 4625 from 5500 to get 875.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8750, and continue the process.

Let's proceed to step 15:
8750 divided by 925 is 9 with a remainder of 425.
Record the quotient 9 as the next digit in the result. 
Result so far: 13158.1059459
Subtracting 8325 from 8750 leaves us with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Going ahead to step 16:
When dividing 4250 by 925, we get 4 with a remainder of 550.
Write down 4 as next digit of the result. 
Result so far: 13158.10594594
Deduct 3700 from 4250 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

The final outcome is 13158.10594594, with a leftover of 5.5e-07.