271931 ÷ 66 
The aim is to understand the frequency of 66 in 271931.

Step 1:
66 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 66

Moving on to step 2:
When dividing 27 by 66, we get 0 with a remainder of 27.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 27 leaves us with 27.
Fetch the next digit (1) from the dividend, attach it to 27 and continue: 271 / 66

Advancing to step 3:
If we divide 271 by 66, we get 4 and a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 264 from 271, we get 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 66

Moving on to step 4:
If we divide 79 by 66, we get 1 and a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 41.0
Subtract 66 from 79 to get 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 66

Moving on to step 5:
133 divided by 66 is 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 412.0
The remainder is 1 after subtracting 132 from 133.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 66

Step 6:
When dividing 11 by 66, we get 0 with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 4120.0
Subtracting 0 from 11 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
When dividing 110 by 66, we get 1 with a remainder of 44.
Use 1 as the next digit of our solution. 
Result so far: 4120.1
Subtracting 66 from 110 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 8:
If we divide 440 by 66, we get 6 and a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 4120.16
The remainder is 44 after subtracting 396 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 9:
66 can be fit into 440 6 times, resulting in a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 4120.166
If we subtract 396 from 440, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 4120.166, with a leftover of 0.0044.