We divide 450255 by 4
The aim is to understand the frequency of 4 in 450255.

Let's proceed to step 1:
The number 4 fits into 4 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 4 from 4 to get 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 4

On to step 2:
The number 4 fits into 5 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 4 from 5 and we're left with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 4

Let's proceed to step 3:
When dividing 10 by 4, we get 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 112.0
Subtracting 8 from 10 leaves us with 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 4

Step 4:
22 divided by 4 is 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 1125.0
Subtract 20 from 22 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 4

On to step 5:
If we divide 25 by 4, we get 6 and a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 11256.0
If we take 24 away from 25, we end up with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 4

Moving on to step 6:
4 can be fit into 15 3 times, resulting in a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 112563.0
If we subtract 12 from 15, we 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.

Advancing to step 7:
If we divide 30 by 4, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 112563.7
If we subtract 28 from 30, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
4 can be fit into 20 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 112563.75
If we take 20 away from 20, we end up 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:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 112563.75
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.

Advancing to step 10:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 112563.75
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.

After the division, we end up with 112563.75 and a remainder of 0.0.