546437 divided by 66 
The aim is to understand the frequency of 66 in 546437.

Advancing to step 1:
66 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 66

Step 2:
The number 66 fits into 54 0 times, leaving a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Include the next digit (6) from the dividend after 54, then repeat: 546 / 66

Let's proceed to step 3:
546 divided by 66 is 8 with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 528 from 546, we get 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 66

Step 4:
The number 66 fits into 184 2 times, leaving a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we take 132 away from 184, we end up with 52.
Bring next digit (3) of the dividend behind the 52 and repeat the process: 523 / 66

Step 5:
523 divided by 66 is 7 with a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 827.0
Deduct 462 from 523 and we're left with 61.
Bring next digit (7) of the dividend behind the 61 and repeat the process: 617 / 66

On to step 6:
66 goes into 617 9 times with a remainder of 23.
Use 9 as the next digit of our solution. 
Result so far: 8279.0
Subtracting 594 from 617 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 7:
If we divide 230 by 66, we get 3 and a remainder of 32.
The next digit of our result is 3. 
Result so far: 8279.3
The remainder is 32 after subtracting 198 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
66 can be fit into 320 4 times, resulting in a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 8279.34
If we subtract 264 from 320, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 9:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 8279.348
If we take 528 away from 560, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
If we divide 320 by 66, we get 4 and a remainder of 56.
The next digit of our result is 4. 
Result so far: 8279.3484
If we subtract 264 from 320, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 11:
If we divide 560 by 66, we get 8 and a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 8279.34848
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
If we divide 320 by 66, we get 4 and a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 8279.348484
Subtracting 264 from 320 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 13:
The number 66 fits into 560 8 times, leaving a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 8279.3484848
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 14:
66 can be fit into 320 4 times, resulting in a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 8279.34848484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final outcome is 8279.34848484, with a leftover of 5.6e-08.