45931 divided by 66 
The aim is to understand the frequency of 66 in 45931.

On to step 1:
66 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 66

Advancing to step 2:
45 divided by 66 is 0 with a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Bring next digit (9) of the dividend behind the 45 and repeat the process: 459 / 66

Moving on to step 3:
66 goes into 459 6 times with a remainder of 63.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 396 from 459 leaves us with 63.
Take the next digit (3) from the dividend and append it to 63, then repeat: 633 / 66

Moving on to step 4:
If we divide 633 by 66, we get 9 and a remainder of 39.
The next digit of our result is 9. 
Result so far: 69.0
Deduct 594 from 633 and we're left with 39.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 66

Step 5:
391 divided by 66 is 5 with a remainder of 61.
Use 5 as the next digit of our solution. 
Result so far: 695.0
If we subtract 330 from 391, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 6:
66 can be fit into 610 9 times, resulting in a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 695.9
If we subtract 594 from 610, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
When dividing 160 by 66, we get 2 with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 695.92
The remainder is 28 after subtracting 132 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
If we divide 280 by 66, we get 4 and a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 695.924
If we take 264 away from 280, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 695.9242
Deduct 132 from 160 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
When dividing 280 by 66, we get 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 695.92424
The remainder is 16 after subtracting 264 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 695.924242
Subtracting 132 from 160 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
280 divided by 66 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 695.9242424
Deduct 264 from 280 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
66 goes into 160 2 times with a remainder of 28.
The next digit of our result is 2. 
Result so far: 695.92424242
Subtract 132 from 160 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 695.92424242 with a remaining 2.8e-08.