We look at the division of 772923 by 45 
The aim is to understand the frequency of 45 in 772923.

Going ahead to step 1:
The number 45 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 45

On to step 2:
45 can be fit into 77 1 times, resulting in a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 32 after subtracting 45 from 77.
Fetch the next digit (2) from the dividend, attach it to 32 and continue: 322 / 45

Advancing to step 3:
If we divide 322 by 45, we get 7 and a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we take 315 away from 322, we end up with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 45

Moving on to step 4:
45 goes into 79 1 times with a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 171.0
Subtract 45 from 79 to get 34.
Bring next digit (2) of the dividend behind the 34 and repeat the process: 342 / 45

On to step 5:
342 divided by 45 is 7 with a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 1717.0
Subtract 315 from 342 to get 27.
Include the next digit (3) from the dividend after 27, then repeat: 273 / 45

Step 6:
45 goes into 273 6 times with a remainder of 3.
Put 6 as the next digit of the answer. 
Result so far: 17176.0
If we subtract 270 from 273, 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.

Step 7:
If we divide 30 by 45, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 17176.0
Subtracting 0 from 30 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.

On to step 8:
300 divided by 45 is 6 with a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 17176.06
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.

Moving on to step 9:
The number 45 fits into 300 6 times, leaving a remainder of 30.
Use 6 as the next digit of our solution. 
Result so far: 17176.066
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.

The final outcome is 17176.066, with a leftover of 0.003.