We divide 551072 by 66
The aim is to understand the frequency of 66 in 551072.

Moving on to step 1:
If we divide 5 by 66, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 66

Advancing to step 2:
The number 66 fits into 55 0 times, leaving a remainder of 55.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 55 after subtracting 0 from 55.
Take the next digit (1) from the dividend and append it to 55, then repeat: 551 / 66

Step 3:
66 can be fit into 551 8 times, resulting in a remainder of 23.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 528 away from 551, we end up with 23.
Include the next digit (0) from the dividend after 23, then repeat: 230 / 66

Advancing to step 4:
66 goes into 230 3 times with a remainder of 32.
Write down 3 as next digit of the result. 
Result so far: 83.0
If we take 198 away from 230, we end up with 32.
Append the next digit (7) from the dividend to 32 and continue with: 327 / 66

Advancing to step 5:
66 goes into 327 4 times with a remainder of 63.
Record the quotient 4 as the next digit in the result. 
Result so far: 834.0
Subtracting 264 from 327 leaves us with 63.
Take the next digit (2) from the dividend and append it to 63, then repeat: 632 / 66

Advancing to step 6:
The number 66 fits into 632 9 times, leaving a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 8349.0
Deduct 594 from 632 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
When dividing 380 by 66, we get 5 with a remainder of 50.
The next digit of our result is 5. 
Result so far: 8349.5
Deduct 330 from 380 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
66 goes into 500 7 times with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 8349.57
Deduct 462 from 500 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 9:
If we divide 380 by 66, we get 5 and a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 8349.575
Subtract 330 from 380 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
If we divide 500 by 66, we get 7 and a remainder of 38.
The next digit of our result is 7. 
Result so far: 8349.5757
Subtracting 462 from 500 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 11:
66 can be fit into 380 5 times, resulting in a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 8349.57575
If we subtract 330 from 380, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 8349.575757
Subtracting 462 from 500 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 13:
66 can be fit into 380 5 times, resulting in a remainder of 50.
The next digit of our result is 5. 
Result so far: 8349.5757575
The remainder is 50 after subtracting 330 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 14:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 8349.57575757
The remainder is 38 after subtracting 462 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 8349.57575757 with a remaining 3.8e-08.