We look at the division of 45441 by 66 
The aim is to understand the frequency of 66 in 45441.

Step 1:
4 divided by 66 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 66

Step 2:
If we divide 45 by 66, we get 0 and a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Fetch the next digit (4) from the dividend, attach it to 45 and continue: 454 / 66

Step 3:
The number 66 fits into 454 6 times, leaving a remainder of 58.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 396 from 454 leaves us with 58.
Take the next digit (4) from the dividend and append it to 58, then repeat: 584 / 66

Moving on to step 4:
66 can be fit into 584 8 times, resulting in a remainder of 56.
The next digit of our result is 8. 
Result so far: 68.0
Subtract 528 from 584 to get 56.
Append the next digit (1) from the dividend to 56 and continue with: 561 / 66

On to step 5:
The number 66 fits into 561 8 times, leaving a remainder of 33.
Record the quotient 8 as the next digit in the result. 
Result so far: 688.0
If we take 528 away from 561, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 6:
When dividing 330 by 66, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 688.5
Subtracting 330 from 330 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
The number 66 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 688.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
66 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 688.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 688.5 with a remaining 0.0.