We look at the division of 912075 by 45 
The aim is to understand the frequency of 45 in 912075.

Step 1:
45 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 45

Step 2:
45 goes into 91 2 times with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 90 from 91 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 45

Going ahead to step 3:
12 divided by 45 is 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtracting 0 from 12 leaves us with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 45

Advancing to step 4:
45 goes into 120 2 times with a remainder of 30.
The next digit of our result is 2. 
Result so far: 202.0
The remainder is 30 after subtracting 90 from 120.
Include the next digit (7) from the dividend after 30, then repeat: 307 / 45

On to step 5:
307 divided by 45 is 6 with a remainder of 37.
The next digit of our result is 6. 
Result so far: 2026.0
Subtract 270 from 307 to get 37.
Take the next digit (5) from the dividend and append it to 37, then repeat: 375 / 45

Advancing to step 6:
When dividing 375 by 45, we get 8 with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 20268.0
Subtracting 360 from 375 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.

Step 7:
The number 45 fits into 150 3 times, leaving a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 20268.3
Subtracting 135 from 150 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.

Step 8:
150 divided by 45 is 3 with a remainder of 15.
The next digit of our result is 3. 
Result so far: 20268.33
If we subtract 135 from 150, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 20268.33, with a leftover of 0.015.