We're dividing 620400 by 25 
We want to figure out the number of times 620400 can be divided by 25.

Step 1:
6 divided by 25 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 25

Moving on to step 2:
25 can be fit into 62 2 times, resulting in a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 50 from 62 leaves us with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 25

Going ahead to step 3:
25 goes into 120 4 times with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 24.0
Subtracting 100 from 120 leaves us with 20.
Bring next digit (4) of the dividend behind the 20 and repeat the process: 204 / 25

Step 4:
If we divide 204 by 25, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 248.0
Deduct 200 from 204 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 25

Going ahead to step 5:
If we divide 40 by 25, we get 1 and a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 2481.0
Deduct 25 from 40 and we're left with 15.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 25

On to step 6:
The number 25 fits into 150 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 24816.0
If we subtract 150 from 150, 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.

Let's proceed to step 7:
If we divide 0 by 25, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 24816.0
Subtracting 0 from 0 leaves us 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.

Advancing to step 8:
25 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 24816.0
Subtract 0 from 0 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.

The quotient of the division is 24816.0, and the remainder is 0.0.