We're dividing 857478 by 25 
We want to divide 857478 by 25.

On to step 1:
25 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 25

On to step 2:
85 divided by 25 is 3 with a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 75 from 85 to get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 25

Going ahead to step 3:
107 divided by 25 is 4 with a remainder of 7.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
The remainder is 7 after subtracting 100 from 107.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 25

On to step 4:
25 can be fit into 74 2 times, resulting in a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 342.0
Subtracting 50 from 74 leaves us with 24.
Bring next digit (7) of the dividend behind the 24 and repeat the process: 247 / 25

Going ahead to step 5:
25 can be fit into 247 9 times, resulting in a remainder of 22.
The next digit of our result is 9. 
Result so far: 3429.0
Deduct 225 from 247 and we're left with 22.
Bring next digit (8) of the dividend behind the 22 and repeat the process: 228 / 25

Let's proceed to step 6:
The number 25 fits into 228 9 times, leaving a remainder of 3.
The next digit of our result is 9. 
Result so far: 34299.0
Subtract 225 from 228 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
If we divide 30 by 25, we get 1 and a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 34299.1
The remainder is 5 after subtracting 25 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
25 can be fit into 50 2 times, resulting in a remainder of 0.
The next digit of our result is 2. 
Result so far: 34299.12
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.

Going ahead to step 9:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 34299.12
Deduct 0 from 0 and we're left 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.

Going ahead to step 10:
25 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34299.12
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.

After the division, we end up with 34299.12 and a remainder of 0.0.