Let's divide 819648 by 45
The aim is to understand the frequency of 45 in 819648.

Advancing to step 1:
45 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 45

Moving on to step 2:
If we divide 81 by 45, we get 1 and a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 36 after subtracting 45 from 81.
Append the next digit (9) from the dividend to 36 and continue with: 369 / 45

Moving on to step 3:
45 can be fit into 369 8 times, resulting in a remainder of 9.
The next digit of our result is 8. 
Result so far: 18.0
If we subtract 360 from 369, we get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 45

Let's proceed to step 4:
45 can be fit into 96 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 182.0
If we subtract 90 from 96, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 45

On to step 5:
45 can be fit into 64 1 times, resulting in a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1821.0
Subtract 45 from 64 to get 19.
Fetch the next digit (8) from the dividend, attach it to 19 and continue: 198 / 45

Let's proceed to step 6:
If we divide 198 by 45, we get 4 and a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 18214.0
The remainder is 18 after subtracting 180 from 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 7:
45 can be fit into 180 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 18214.4
The remainder is 0 after subtracting 180 from 180.
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:
When dividing 0 by 45, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 18214.4
If we take 0 away from 0, 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.

Moving on to step 9:
If we divide 0 by 45, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 18214.4
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.

The final result is 18214.4 with a remainder of 0.0.