755922 divided by 45 
The aim is to understand the frequency of 45 in 755922.

Going ahead to step 1:
45 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 45

Going ahead to step 2:
45 can be fit into 75 1 times, resulting in a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 45 from 75 and we're left with 30.
Append the next digit (5) from the dividend to 30 and continue with: 305 / 45

On to step 3:
305 divided by 45 is 6 with a remainder of 35.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 270 away from 305, we end up with 35.
Include the next digit (9) from the dividend after 35, then repeat: 359 / 45

Moving on to step 4:
If we divide 359 by 45, we get 7 and a remainder of 44.
Use 7 as the next digit of our solution. 
Result so far: 167.0
The remainder is 44 after subtracting 315 from 359.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 45

Moving on to step 5:
When dividing 442 by 45, we get 9 with a remainder of 37.
The next digit of our result is 9. 
Result so far: 1679.0
The remainder is 37 after subtracting 405 from 442.
Grab the next digit (2) from the dividend, add it to 37, then carry on: 372 / 45

Step 6:
When dividing 372 by 45, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 16798.0
If we take 360 away from 372, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 7:
120 divided by 45 is 2 with a remainder of 30.
Record the quotient 2 as the next digit in the result. 
Result so far: 16798.2
Subtracting 90 from 120 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:
If we divide 300 by 45, we get 6 and a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 16798.26
The remainder is 30 after subtracting 270 from 300.
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:
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: 16798.266
Deduct 270 from 300 and we're left 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 result is 16798.266 with a remainder of 0.003.