Let's divide 419803 by 45
The aim is to understand the frequency of 45 in 419803.

On to step 1:
45 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (1) from the dividend after 4, then repeat: 41 / 45

On to step 2:
When dividing 41 by 45, we get 0 with a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 41 after subtracting 0 from 41.
Include the next digit (9) from the dividend after 41, then repeat: 419 / 45

Going ahead to step 3:
The number 45 fits into 419 9 times, leaving a remainder of 14.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 405 from 419, we get 14.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 45

Let's proceed to step 4:
45 can be fit into 148 3 times, resulting in a remainder of 13.
The next digit of our result is 3. 
Result so far: 93.0
Deduct 135 from 148 and we're left with 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 45

Step 5:
45 can be fit into 130 2 times, resulting in a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 932.0
If we subtract 90 from 130, we get 40.
Take the next digit (3) from the dividend and append it to 40, then repeat: 403 / 45

Going ahead to step 6:
The number 45 fits into 403 8 times, leaving a remainder of 43.
Use 8 as the next digit of our solution. 
Result so far: 9328.0
Subtracting 360 from 403 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
45 goes into 430 9 times with a remainder of 25.
The number 9 becomes the next digit in our result. 
Result so far: 9328.9
If we take 405 away from 430, we end up 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.

On to step 8:
If we divide 250 by 45, we get 5 and a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 9328.95
Subtract 225 from 250 to 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.

Step 9:
45 can be fit into 250 5 times, resulting in a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 9328.955
If we subtract 225 from 250, 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.

The quotient of the division is 9328.955, and the remainder is 0.0025.