We divide 450649 by 25
We want to figure out the number of times 450649 can be divided by 25.

On to step 1:
25 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 25

Going ahead to step 2:
If we divide 45 by 25, we get 1 and a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 25 from 45, we get 20.
Take the next digit (0) from the dividend and append it to 20, then repeat: 200 / 25

Advancing to step 3:
The number 25 fits into 200 8 times, leaving a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 200 from 200 to get 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 25

On to step 4:
If we divide 6 by 25, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 180.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 25

Moving on to step 5:
25 goes into 64 2 times with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 1802.0
If we take 50 away from 64, we end up with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 25

On to step 6:
If we divide 149 by 25, we get 5 and a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 18025.0
Deduct 125 from 149 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
When dividing 240 by 25, we get 9 with a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 18025.9
Subtracting 225 from 240 leaves us 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:
150 divided by 25 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 18025.96
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.

Step 9:
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: 18025.96
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.

Moving on to step 10:
When dividing 0 by 25, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 18025.96
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 18025.96, and the remainder is 0.0.