We're dividing 221356 by 45 
The aim is to understand the frequency of 45 in 221356.

Going ahead to step 1:
The number 45 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 45

Step 2:
When dividing 22 by 45, we get 0 with a remainder of 22.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 22 after subtracting 0 from 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 45

Advancing to step 3:
When dividing 221 by 45, we get 4 with a remainder of 41.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 180 away from 221, we end up with 41.
Grab the next digit (3) from the dividend, add it to 41, then carry on: 413 / 45

Going ahead to step 4:
If we divide 413 by 45, we get 9 and a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Subtract 405 from 413 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 45

On to step 5:
45 can be fit into 85 1 times, resulting in a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 491.0
Subtracting 45 from 85 leaves us with 40.
Include the next digit (6) from the dividend after 40, then repeat: 406 / 45

On to step 6:
When dividing 406 by 45, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 4919.0
If we subtract 405 from 406, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
If we divide 10 by 45, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 4919.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
The number 45 fits into 100 2 times, leaving a remainder of 10.
The next digit of our result is 2. 
Result so far: 4919.02
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
When dividing 100 by 45, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 4919.022
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 4919.022 with a remainder of 0.001.