805353 ÷ 66 
The aim is to understand the frequency of 66 in 805353.

Advancing to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 66

Advancing to step 2:
66 can be fit into 80 1 times, resulting in a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 66 from 80 leaves us with 14.
Append the next digit (5) from the dividend to 14 and continue with: 145 / 66

Let's proceed to step 3:
66 goes into 145 2 times with a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we subtract 132 from 145, we get 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 66

Let's proceed to step 4:
When dividing 133 by 66, we get 2 with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 122.0
The remainder is 1 after subtracting 132 from 133.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 66

On to step 5:
If we divide 15 by 66, we get 0 and a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 1220.0
If we take 0 away from 15, we end up with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 66

On to step 6:
153 divided by 66 is 2 with a remainder of 21.
Record the quotient 2 as the next digit in the result. 
Result so far: 12202.0
If we take 132 away from 153, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
When dividing 210 by 66, we get 3 with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 12202.3
Subtracting 198 from 210 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 8:
120 divided by 66 is 1 with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 12202.31
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.

Step 9:
66 goes into 540 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 12202.318
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.

Moving on to step 10:
120 divided by 66 is 1 with a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 12202.3181
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.

Step 11:
540 divided by 66 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 12202.31818
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.

Step 12:
When dividing 120 by 66, we get 1 with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 12202.318181
If we subtract 66 from 120, we 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.

On to step 13:
If we divide 540 by 66, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 12202.3181818
If we subtract 528 from 540, we 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.

Advancing to step 14:
66 can be fit into 120 1 times, resulting in a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 12202.31818181
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.

After the division, we end up with 12202.31818181 and a remainder of 5.4e-08.