We're dividing 550146 by 66 
The aim is to understand the frequency of 66 in 550146.

Going ahead to step 1:
66 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 66

Let's proceed to step 2:
The number 66 fits into 55 0 times, leaving a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Fetch the next digit (0) from the dividend, attach it to 55 and continue: 550 / 66

On to step 3:
66 can be fit into 550 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 22 after subtracting 528 from 550.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 66

Moving on to step 4:
If we divide 221 by 66, we get 3 and a remainder of 23.
The next digit of our result is 3. 
Result so far: 83.0
Subtracting 198 from 221 leaves us with 23.
Grab the next digit (4) from the dividend, add it to 23, then carry on: 234 / 66

On to step 5:
66 can be fit into 234 3 times, resulting in a remainder of 36.
Put 3 as the next digit of the answer. 
Result so far: 833.0
Deduct 198 from 234 and we're left with 36.
Take the next digit (6) from the dividend and append it to 36, then repeat: 366 / 66

Step 6:
If we divide 366 by 66, we get 5 and a remainder of 36.
Put 5 as the next digit of the answer. 
Result so far: 8335.0
If we subtract 330 from 366, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
If we divide 360 by 66, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 8335.5
Deduct 330 from 360 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
66 goes into 300 4 times with a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 8335.54
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 9:
The number 66 fits into 360 5 times, leaving a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 8335.545
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
If we divide 300 by 66, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 8335.5454
Deduct 264 from 300 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
66 goes into 360 5 times with a remainder of 30.
The next digit of our result is 5. 
Result so far: 8335.54545
If we subtract 330 from 360, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
66 can be fit into 300 4 times, resulting in a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 8335.545454
Subtracting 264 from 300 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 13:
If we divide 360 by 66, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 8335.5454545
Deduct 330 from 360 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
The number 66 fits into 300 4 times, leaving a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 8335.54545454
Subtracting 264 from 300 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 8335.54545454, with a leftover of 3.6e-08.