We're dividing 249201 by 66 
The aim is to understand the frequency of 66 in 249201.

Moving on to step 1:
2 divided by 66 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 66

Step 2:
66 can be fit into 24 0 times, resulting in a remainder of 24.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 24, we get 24.
Append the next digit (9) from the dividend to 24 and continue with: 249 / 66

Moving on to step 3:
When dividing 249 by 66, we get 3 with a remainder of 51.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 198 from 249 to get 51.
Fetch the next digit (2) from the dividend, attach it to 51 and continue: 512 / 66

Let's proceed to step 4:
512 divided by 66 is 7 with a remainder of 50.
The next digit of our result is 7. 
Result so far: 37.0
Subtracting 462 from 512 leaves us with 50.
Take the next digit (0) from the dividend and append it to 50, then repeat: 500 / 66

Going ahead to step 5:
66 goes into 500 7 times with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 377.0
The remainder is 38 after subtracting 462 from 500.
Take the next digit (1) from the dividend and append it to 38, then repeat: 381 / 66

Step 6:
381 divided by 66 is 5 with a remainder of 51.
The number 5 becomes the next digit in our result. 
Result so far: 3775.0
Deduct 330 from 381 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 7:
If we divide 510 by 66, we get 7 and a remainder of 48.
Use 7 as the next digit of our solution. 
Result so far: 3775.7
The remainder is 48 after subtracting 462 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
480 divided by 66 is 7 with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 3775.77
If we subtract 462 from 480, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 3775.77, and the remainder is 0.018.