We're dividing 869534 by 45 
The aim is to understand the frequency of 45 in 869534.

Going ahead to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 45

Moving on to step 2:
The number 45 fits into 86 1 times, leaving a remainder of 41.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 45 from 86 leaves us with 41.
Grab the next digit (9) from the dividend, add it to 41, then carry on: 419 / 45

On to step 3:
45 goes into 419 9 times with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 405 from 419 leaves us with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 45

Going ahead to step 4:
The number 45 fits into 145 3 times, leaving a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
Deduct 135 from 145 and we're left with 10.
Bring next digit (3) of the dividend behind the 10 and repeat the process: 103 / 45

Let's proceed to step 5:
103 divided by 45 is 2 with a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 1932.0
Deduct 90 from 103 and we're left with 13.
Append the next digit (4) from the dividend to 13 and continue with: 134 / 45

On to step 6:
45 can be fit into 134 2 times, resulting in a remainder of 44.
The next digit of our result is 2. 
Result so far: 19322.0
If we subtract 90 from 134, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 7:
45 goes into 440 9 times with a remainder of 35.
Write down 9 as next digit of the result. 
Result so far: 19322.9
Deduct 405 from 440 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 8:
350 divided by 45 is 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 19322.97
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
350 divided by 45 is 7 with a remainder of 35.
The next digit of our result is 7. 
Result so far: 19322.977
The remainder is 35 after subtracting 315 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 19322.977 and a remainder of 0.0035.