We're dividing 398648 by 25 
We want to divide 398648 by 25.

Going ahead to step 1:
If we divide 3 by 25, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 25

Going ahead to step 2:
The number 25 fits into 39 1 times, leaving a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 25 from 39 leaves us with 14.
Grab the next digit (8) from the dividend, add it to 14, then carry on: 148 / 25

Step 3:
If we divide 148 by 25, we get 5 and a remainder of 23.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 125 away from 148, we end up with 23.
Take the next digit (6) from the dividend and append it to 23, then repeat: 236 / 25

Advancing to step 4:
25 can be fit into 236 9 times, resulting in a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 159.0
Deduct 225 from 236 and we're left with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 25

Step 5:
114 divided by 25 is 4 with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 1594.0
If we subtract 100 from 114, we get 14.
Fetch the next digit (8) from the dividend, attach it to 14 and continue: 148 / 25

Step 6:
25 goes into 148 5 times with a remainder of 23.
Write down 5 as next digit of the result. 
Result so far: 15945.0
If we take 125 away from 148, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 7:
The number 25 fits into 230 9 times, leaving a remainder of 5.
The next digit of our result is 9. 
Result so far: 15945.9
Subtracting 225 from 230 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
When dividing 50 by 25, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 15945.92
Subtract 50 from 50 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.

Moving on to step 9:
If we divide 0 by 25, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15945.92
If we subtract 0 from 0, we 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.

Advancing to step 10:
0 divided by 25 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15945.92
If we take 0 away from 0, we end up 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.

The quotient of the division is 15945.92, and the remainder is 0.0.