We look at the division of 236165 by 66 
The aim is to understand the frequency of 66 in 236165.

Going ahead to 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
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 66

On to step 2:
The number 66 fits into 23 0 times, leaving a remainder of 23.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Bring next digit (6) of the dividend behind the 23 and repeat the process: 236 / 66

Advancing to step 3:
When dividing 236 by 66, we get 3 with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 198 from 236 leaves us with 38.
Take the next digit (1) from the dividend and append it to 38, then repeat: 381 / 66

Let's proceed to step 4:
The number 66 fits into 381 5 times, leaving a remainder of 51.
The next digit of our result is 5. 
Result so far: 35.0
If we take 330 away from 381, we end up with 51.
Take the next digit (6) from the dividend and append it to 51, then repeat: 516 / 66

Step 5:
66 goes into 516 7 times with a remainder of 54.
The next digit of our result is 7. 
Result so far: 357.0
The remainder is 54 after subtracting 462 from 516.
Fetch the next digit (5) from the dividend, attach it to 54 and continue: 545 / 66

Advancing to step 6:
66 can be fit into 545 8 times, resulting in a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 3578.0
The remainder is 17 after subtracting 528 from 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
If we divide 170 by 66, we get 2 and a remainder of 38.
The next digit of our result is 2. 
Result so far: 3578.2
Subtracting 132 from 170 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 8:
The number 66 fits into 380 5 times, leaving a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 3578.25
Deduct 330 from 380 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
500 divided by 66 is 7 with a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 3578.257
The remainder is 38 after subtracting 462 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 10:
66 goes into 380 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 3578.2575
The remainder is 50 after subtracting 330 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 11:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 3578.25757
Subtract 462 from 500 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 12:
When dividing 380 by 66, we get 5 with a remainder of 50.
The next digit of our result is 5. 
Result so far: 3578.257575
Subtracting 330 from 380 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
If we divide 500 by 66, we get 7 and a remainder of 38.
The next digit of our result is 7. 
Result so far: 3578.2575757
If we take 462 away from 500, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 14:
380 divided by 66 is 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 3578.25757575
If we subtract 330 from 380, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 3578.25757575 and a remainder of 5e-08.