We look at the division of 156942 by 66 
The aim is to understand the frequency of 66 in 156942.

Going ahead to step 1:
The number 66 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 66

Let's proceed to step 2:
The number 66 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 66

Advancing to step 3:
66 can be fit into 156 2 times, resulting in a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 132 from 156 to get 24.
Grab the next digit (9) from the dividend, add it to 24, then carry on: 249 / 66

Advancing to step 4:
The number 66 fits into 249 3 times, leaving a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtracting 198 from 249 leaves us with 51.
Include the next digit (4) from the dividend after 51, then repeat: 514 / 66

Step 5:
If we divide 514 by 66, we get 7 and a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 237.0
Deduct 462 from 514 and we're left with 52.
Fetch the next digit (2) from the dividend, attach it to 52 and continue: 522 / 66

Step 6:
If we divide 522 by 66, we get 7 and a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 2377.0
Subtracting 462 from 522 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 7:
66 goes into 600 9 times with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 2377.9
Deduct 594 from 600 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 2377.9
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
66 goes into 600 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 2377.909
Subtract 594 from 600 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 10:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 2377.909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
The number 66 fits into 600 9 times, leaving a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 2377.90909
Subtracting 594 from 600 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 12:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 2377.90909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 13:
600 divided by 66 is 9 with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 2377.9090909
If we subtract 594 from 600, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 2377.9090909
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 2377.9090909, with a leftover of 6e-08.