903652 ÷ 45 
The aim is to understand the frequency of 45 in 903652.

Let's proceed to step 1:
The number 45 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 45

Advancing to step 2:
The number 45 fits into 90 2 times, leaving a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 90 from 90 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 45

Step 3:
The number 45 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 45

Advancing to step 4:
36 divided by 45 is 0 with a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 200.0
The remainder is 36 after subtracting 0 from 36.
Append the next digit (5) from the dividend to 36 and continue with: 365 / 45

Advancing to step 5:
When dividing 365 by 45, we get 8 with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 2008.0
The remainder is 5 after subtracting 360 from 365.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 45

Let's proceed to step 6:
52 divided by 45 is 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 20081.0
Subtract 45 from 52 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
45 can be fit into 70 1 times, resulting in a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 20081.1
If we subtract 45 from 70, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 8:
45 can be fit into 250 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 20081.15
Subtracting 225 from 250 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
If we divide 250 by 45, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 20081.155
Subtracting 225 from 250 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 20081.155, and the remainder is 0.0025.