812844 ÷ 66 
The aim is to understand the frequency of 66 in 812844.

Advancing to step 1:
8 divided by 66 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 66

On to step 2:
When dividing 81 by 66, we get 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 15 after subtracting 66 from 81.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 66

Step 3:
If we divide 152 by 66, we get 2 and a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 20 after subtracting 132 from 152.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 66

On to step 4:
208 divided by 66 is 3 with a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 123.0
If we take 198 away from 208, we end up with 10.
Append the next digit (4) from the dividend to 10 and continue with: 104 / 66

Advancing to step 5:
104 divided by 66 is 1 with a remainder of 38.
The next digit of our result is 1. 
Result so far: 1231.0
If we subtract 66 from 104, we get 38.
Fetch the next digit (4) from the dividend, attach it to 38 and continue: 384 / 66

Let's proceed to step 6:
66 goes into 384 5 times with a remainder of 54.
Write down 5 as next digit of the result. 
Result so far: 12315.0
Subtracting 330 from 384 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 7:
540 divided by 66 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 12315.8
If we take 528 away from 540, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
120 divided by 66 is 1 with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 12315.81
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 9:
540 divided by 66 is 8 with a remainder of 12.
The next digit of our result is 8. 
Result so far: 12315.818
Subtract 528 from 540 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 10:
The number 66 fits into 120 1 times, leaving a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 12315.8181
The remainder is 54 after subtracting 66 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 11:
66 can be fit into 540 8 times, resulting in a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 12315.81818
Subtract 528 from 540 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 12:
120 divided by 66 is 1 with a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 12315.818181
Subtract 66 from 120 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 13:
The number 66 fits into 540 8 times, leaving a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 12315.8181818
Subtracting 528 from 540 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
The number 66 fits into 120 1 times, leaving a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 12315.81818181
Subtracting 66 from 120 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 12315.81818181 with a remaining 5.4e-08.