646494 ÷ 25 
Let's see how many times 25 fits into 646494.

Advancing to step 1:
6 divided by 25 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 25

Let's proceed to step 2:
When dividing 64 by 25, we get 2 with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 50 from 64 leaves us with 14.
Include the next digit (6) from the dividend after 14, then repeat: 146 / 25

Advancing to step 3:
If we divide 146 by 25, we get 5 and a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 21 after subtracting 125 from 146.
Bring next digit (4) of the dividend behind the 21 and repeat the process: 214 / 25

Step 4:
25 goes into 214 8 times with a remainder of 14.
The next digit of our result is 8. 
Result so far: 258.0
If we subtract 200 from 214, we get 14.
Bring next digit (9) of the dividend behind the 14 and repeat the process: 149 / 25

Let's proceed to step 5:
25 goes into 149 5 times with a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 2585.0
If we take 125 away from 149, we end up with 24.
Take the next digit (4) from the dividend and append it to 24, then repeat: 244 / 25

Going ahead to step 6:
244 divided by 25 is 9 with a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 25859.0
Deduct 225 from 244 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
25 goes into 190 7 times with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 25859.7
If we take 175 away from 190, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
The number 25 fits into 150 6 times, leaving a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 25859.76
Deduct 150 from 150 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 9:
25 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 25859.76
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.

Step 10:
25 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 25859.76
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 final result is 25859.76 with a remainder of 0.0.