Let's divide 854949 by 66
The aim is to understand the frequency of 66 in 854949.

Going ahead to step 1:
When dividing 8 by 66, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 66

Step 2:
If we divide 85 by 66, we get 1 and a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 66 from 85 to get 19.
Grab the next digit (4) from the dividend, add it to 19, then carry on: 194 / 66

Moving on to step 3:
66 goes into 194 2 times with a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Deduct 132 from 194 and we're left with 62.
Bring next digit (9) of the dividend behind the 62 and repeat the process: 629 / 66

Let's proceed to step 4:
When dividing 629 by 66, we get 9 with a remainder of 35.
The next digit of our result is 9. 
Result so far: 129.0
If we take 594 away from 629, we end up with 35.
Take the next digit (4) from the dividend and append it to 35, then repeat: 354 / 66

Let's proceed to step 5:
66 can be fit into 354 5 times, resulting in a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 1295.0
Subtract 330 from 354 to get 24.
Bring next digit (9) of the dividend behind the 24 and repeat the process: 249 / 66

Going ahead to step 6:
If we divide 249 by 66, we get 3 and a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 12953.0
If we subtract 198 from 249, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 7:
The number 66 fits into 510 7 times, leaving a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 12953.7
If we take 462 away from 510, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
If we divide 480 by 66, we get 7 and a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 12953.77
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.

Our division results in 12953.77 with a remaining 0.018.