We're dividing 392101 by 66 
The aim is to understand the frequency of 66 in 392101.

Step 1:
3 divided by 66 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 66

Step 2:
If we divide 39 by 66, we get 0 and a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Take the next digit (2) from the dividend and append it to 39, then repeat: 392 / 66

On to step 3:
The number 66 fits into 392 5 times, leaving a remainder of 62.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 330 from 392 and we're left with 62.
Take the next digit (1) from the dividend and append it to 62, then repeat: 621 / 66

Step 4:
If we divide 621 by 66, we get 9 and a remainder of 27.
The next digit of our result is 9. 
Result so far: 59.0
Subtract 594 from 621 to get 27.
Grab the next digit (0) from the dividend, add it to 27, then carry on: 270 / 66

Going ahead to step 5:
66 goes into 270 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 594.0
The remainder is 6 after subtracting 264 from 270.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 66

On to step 6:
66 can be fit into 61 0 times, resulting in a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 5940.0
Subtracting 0 from 61 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 7:
66 goes into 610 9 times with a remainder of 16.
The next digit of our result is 9. 
Result so far: 5940.9
If we take 594 away from 610, 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 8:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 5940.92
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.

Going ahead to step 9:
280 divided by 66 is 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 5940.924
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.

On to step 10:
160 divided by 66 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 5940.9242
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.

Step 11:
66 goes into 280 4 times with a remainder of 16.
The next digit of our result is 4. 
Result so far: 5940.92424
Subtract 264 from 280 to 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 12:
66 goes into 160 2 times with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 5940.924242
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.

Let's proceed to step 13:
66 goes into 280 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 5940.9242424
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.

Moving on to step 14:
The number 66 fits into 160 2 times, leaving a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 5940.92424242
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.

The final outcome is 5940.92424242, with a leftover of 2.8e-08.