798833 divided by 66 
The aim is to understand the frequency of 66 in 798833.

On to step 1:
7 divided by 66 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 66

Advancing to step 2:
66 can be fit into 79 1 times, resulting in a remainder of 13.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 66 from 79 leaves us with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 66

Step 3:
The number 66 fits into 138 2 times, leaving a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 12.0
The remainder is 6 after subtracting 132 from 138.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 66

Let's proceed to step 4:
When dividing 68 by 66, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 121.0
If we subtract 66 from 68, we get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 66

Let's proceed to step 5:
When dividing 23 by 66, we get 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 1210.0
Subtracting 0 from 23 leaves us with 23.
Bring next digit (3) of the dividend behind the 23 and repeat the process: 233 / 66

Moving on to step 6:
66 goes into 233 3 times with a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 12103.0
If we subtract 198 from 233, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 7:
66 goes into 350 5 times with a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 12103.5
If we subtract 330 from 350, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
66 goes into 200 3 times with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 12103.53
Deduct 198 from 200 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
When dividing 20 by 66, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 12103.53
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 10:
When dividing 200 by 66, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 12103.5303
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
66 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 12103.5303
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 12:
200 divided by 66 is 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 12103.530303
If we subtract 198 from 200, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 13:
When dividing 20 by 66, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 12103.530303
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
The number 66 fits into 200 3 times, leaving a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 12103.53030303
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final outcome is 12103.53030303, with a leftover of 2e-09.