We're dividing 793816 by 66 
The aim is to understand the frequency of 66 in 793816.

Moving on to step 1:
If we divide 7 by 66, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 66

On to step 2:
When dividing 79 by 66, we get 1 with a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 66 from 79 leaves us with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 66

Advancing to step 3:
66 goes into 133 2 times with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we subtract 132 from 133, we get 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 66

Going ahead to step 4:
66 goes into 18 0 times with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 120.0
If we take 0 away from 18, we end up with 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 66

Going ahead to step 5:
The number 66 fits into 181 2 times, leaving a remainder of 49.
Use 2 as the next digit of our solution. 
Result so far: 1202.0
Deduct 132 from 181 and we're left with 49.
Append the next digit (6) from the dividend to 49 and continue with: 496 / 66

Going ahead to step 6:
496 divided by 66 is 7 with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 12027.0
Subtract 462 from 496 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
66 goes into 340 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 12027.5
The remainder is 10 after subtracting 330 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
66 can be fit into 100 1 times, resulting in a remainder of 34.
Use 1 as the next digit of our solution. 
Result so far: 12027.51
Subtracting 66 from 100 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
The number 66 fits into 340 5 times, leaving a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 12027.515
If we take 330 away from 340, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
66 goes into 100 1 times with a remainder of 34.
The next digit of our result is 1. 
Result so far: 12027.5151
Subtracting 66 from 100 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
If we divide 340 by 66, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 12027.51515
The remainder is 10 after subtracting 330 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
100 divided by 66 is 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 12027.515151
The remainder is 34 after subtracting 66 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 13:
340 divided by 66 is 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 12027.5151515
If we subtract 330 from 340, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 14:
If we divide 100 by 66, we get 1 and a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 12027.51515151
If we subtract 66 from 100, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

After the division, we end up with 12027.51515151 and a remainder of 3.4e-08.