We're dividing 861892 by 66 
The aim is to understand the frequency of 66 in 861892.

On to step 1:
If we divide 8 by 66, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 66

Let's proceed to step 2:
86 divided by 66 is 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 66 from 86 leaves us with 20.
Include the next digit (1) from the dividend after 20, then repeat: 201 / 66

Advancing to step 3:
66 goes into 201 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 198 from 201 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 66

Advancing to step 4:
If we divide 38 by 66, we get 0 and a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 130.0
Deduct 0 from 38 and we're left with 38.
Append the next digit (9) from the dividend to 38 and continue with: 389 / 66

Step 5:
389 divided by 66 is 5 with a remainder of 59.
The number 5 becomes the next digit in our result. 
Result so far: 1305.0
Subtract 330 from 389 to get 59.
Take the next digit (2) from the dividend and append it to 59, then repeat: 592 / 66

Going ahead to step 6:
When dividing 592 by 66, we get 8 with a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 13058.0
The remainder is 64 after subtracting 528 from 592.
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 7:
66 can be fit into 640 9 times, resulting in a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 13058.9
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.

Moving on to step 8:
The number 66 fits into 460 6 times, leaving a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 13058.96
If we take 396 away from 460, we end up 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.

Advancing to step 9:
The number 66 fits into 640 9 times, leaving a remainder of 46.
The next digit of our result is 9. 
Result so far: 13058.969
The remainder is 46 after subtracting 594 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 10:
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: 13058.9696
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.

Step 11:
640 divided by 66 is 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 13058.96969
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 12:
If we divide 460 by 66, we get 6 and a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 13058.969696
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 13:
If we divide 640 by 66, we get 9 and a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 13058.9696969
Deduct 594 from 640 and we're left 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.

Step 14:
When dividing 460 by 66, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 13058.96969696
Subtract 396 from 460 to 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.

Our division results in 13058.96969696 with a remaining 6.4e-08.