We look at the division of 804450 by 45 
The aim is to understand the frequency of 45 in 804450.

Going ahead to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 45

Moving on to step 2:
If we divide 80 by 45, we get 1 and a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 45 from 80 leaves us with 35.
Include the next digit (4) from the dividend after 35, then repeat: 354 / 45

Let's proceed to step 3:
45 goes into 354 7 times with a remainder of 39.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 315 from 354, we get 39.
Fetch the next digit (4) from the dividend, attach it to 39 and continue: 394 / 45

Moving on to step 4:
When dividing 394 by 45, we get 8 with a remainder of 34.
The next digit of our result is 8. 
Result so far: 178.0
The remainder is 34 after subtracting 360 from 394.
Append the next digit (5) from the dividend to 34 and continue with: 345 / 45

Step 5:
345 divided by 45 is 7 with a remainder of 30.
Use 7 as the next digit of our solution. 
Result so far: 1787.0
If we subtract 315 from 345, we get 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 45

Going ahead to step 6:
45 can be fit into 300 6 times, resulting in a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 17876.0
If we subtract 270 from 300, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 7:
The number 45 fits into 300 6 times, leaving a remainder of 30.
The next digit of our result is 6. 
Result so far: 17876.6
Subtracting 270 from 300 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
45 goes into 300 6 times with a remainder of 30.
Use 6 as the next digit of our solution. 
Result so far: 17876.66
If we take 270 away from 300, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 17876.66 with a remaining 0.03.