237862 ÷ 66 
The aim is to understand the frequency of 66 in 237862.

Step 1:
The number 66 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 66

Moving on to step 2:
If we divide 23 by 66, we get 0 and a remainder of 23.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Grab the next digit (7) from the dividend, add it to 23, then carry on: 237 / 66

Advancing to step 3:
66 goes into 237 3 times with a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 198 from 237 to get 39.
Include the next digit (8) from the dividend after 39, then repeat: 398 / 66

Advancing to step 4:
66 can be fit into 398 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 36.0
If we subtract 396 from 398, we get 2.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 66

Moving on to step 5:
The number 66 fits into 26 0 times, leaving a remainder of 26.
The next digit of our result is 0. 
Result so far: 360.0
Subtract 0 from 26 to get 26.
Bring next digit (2) of the dividend behind the 26 and repeat the process: 262 / 66

Step 6:
66 can be fit into 262 3 times, resulting in a remainder of 64.
Put 3 as the next digit of the answer. 
Result so far: 3603.0
Deduct 198 from 262 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 7:
66 goes into 640 9 times with a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 3603.9
Subtract 594 from 640 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 8:
66 can be fit into 460 6 times, resulting in a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 3603.96
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 9:
66 goes into 640 9 times with a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 3603.969
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 10:
460 divided by 66 is 6 with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 3603.9696
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 11:
The number 66 fits into 640 9 times, leaving a remainder of 46.
The next digit of our result is 9. 
Result so far: 3603.96969
Subtract 594 from 640 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 12:
66 goes into 460 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 3603.969696
The remainder is 64 after subtracting 396 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
640 divided by 66 is 9 with a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 3603.9696969
If we take 594 away from 640, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 14:
The number 66 fits into 460 6 times, leaving a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 3603.96969696
Subtracting 396 from 460 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Our division results in 3603.96969696 with a remaining 6.4e-08.