We're dividing 398547 by 25 
Our goal is to divide 398547 by 25.

Step 1:
The number 25 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 25

Step 2:
25 goes into 39 1 times with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 25 from 39 and we're left with 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 25

Advancing to step 3:
If we divide 148 by 25, we get 5 and a remainder of 23.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we subtract 125 from 148, we get 23.
Fetch the next digit (5) from the dividend, attach it to 23 and continue: 235 / 25

Let's proceed to step 4:
25 goes into 235 9 times with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 159.0
Deduct 225 from 235 and we're left with 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 25

Moving on to step 5:
When dividing 104 by 25, we get 4 with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 1594.0
If we subtract 100 from 104, we get 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 25

Step 6:
The number 25 fits into 47 1 times, leaving a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 15941.0
If we subtract 25 from 47, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
25 goes into 220 8 times with a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 15941.8
Subtract 200 from 220 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
200 divided by 25 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 15941.88
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 15941.88, with a leftover of 0.0.