We look at the division of 25171505 by 489 
Our goal is to divide 25171505 by 489.

Advancing to step 1:
489 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.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 489

Let's proceed to step 2:
489 goes into 25 0 times with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Fetch the next digit (1) from the dividend, attach it to 25 and continue: 251 / 489

On to step 3:
When dividing 251 by 489, we get 0 with a remainder of 251.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 251 after subtracting 0 from 251.
Include the next digit (7) from the dividend after 251, then repeat: 2517 / 489

Moving on to step 4:
489 can be fit into 2517 5 times, resulting in a remainder of 72.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtract 2445 from 2517 to get 72.
Bring next digit (1) of the dividend behind the 72 and repeat the process: 721 / 489

Going ahead to step 5:
The number 489 fits into 721 1 times, leaving a remainder of 232.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Subtracting 489 from 721 leaves us with 232.
Grab the next digit (5) from the dividend, add it to 232, then carry on: 2325 / 489

On to step 6:
If we divide 2325 by 489, we get 4 and a remainder of 369.
Write down 4 as next digit of the result. 
Result so far: 514.0
Deduct 1956 from 2325 and we're left with 369.
Include the next digit (0) from the dividend after 369, then repeat: 3690 / 489

Moving on to step 7:
The number 489 fits into 3690 7 times, leaving a remainder of 267.
Record the quotient 7 as the next digit in the result. 
Result so far: 5147.0
Subtracting 3423 from 3690 leaves us with 267.
Take the next digit (5) from the dividend and append it to 267, then repeat: 2675 / 489

Going ahead to step 8:
The number 489 fits into 2675 5 times, leaving a remainder of 230.
Write down 5 as next digit of the result. 
Result so far: 51475.0
The remainder is 230 after subtracting 2445 from 2675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 9:
If we divide 2300 by 489, we get 4 and a remainder of 344.
Use 4 as the next digit of our solution. 
Result so far: 51475.4
Subtract 1956 from 2300 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Step 10:
When dividing 3440 by 489, we get 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 51475.47
Deduct 3423 from 3440 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 11:
170 divided by 489 is 0 with a remainder of 170.
The next digit of our result is 0. 
Result so far: 51475.47
The remainder is 170 after subtracting 0 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 12:
When dividing 1700 by 489, we get 3 with a remainder of 233.
Record the quotient 3 as the next digit in the result. 
Result so far: 51475.4703
Subtracting 1467 from 1700 leaves us with 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Step 13:
2330 divided by 489 is 4 with a remainder of 374.
Write down 4 as next digit of the result. 
Result so far: 51475.47034
The remainder is 374 after subtracting 1956 from 2330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Moving on to step 14:
If we divide 3740 by 489, we get 7 and a remainder of 317.
The number 7 becomes the next digit in our result. 
Result so far: 51475.470347
Deduct 3423 from 3740 and we're left with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Going ahead to step 15:
The number 489 fits into 3170 6 times, leaving a remainder of 236.
Use 6 as the next digit of our solution. 
Result so far: 51475.4703476
Subtract 2934 from 3170 to get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Let's proceed to step 16:
The number 489 fits into 2360 4 times, leaving a remainder of 404.
Put 4 as the next digit of the answer. 
Result so far: 51475.47034764
Subtract 1956 from 2360 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Our division results in 51475.47034764 with a remaining 4.04e-07.