We look at the division of 93979009 by 66 
The aim is to understand the frequency of 66 in 93979009.

Going ahead to step 1:
If we divide 9 by 66, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 66

On to step 2:
93 divided by 66 is 1 with a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 66 from 93 leaves us with 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 66

Advancing to step 3:
66 can be fit into 279 4 times, resulting in a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 264 from 279 to get 15.
Include the next digit (7) from the dividend after 15, then repeat: 157 / 66

On to step 4:
157 divided by 66 is 2 with a remainder of 25.
The number 2 becomes the next digit in our result. 
Result so far: 142.0
If we subtract 132 from 157, we get 25.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 66

Advancing to step 5:
If we divide 259 by 66, we get 3 and a remainder of 61.
The next digit of our result is 3. 
Result so far: 1423.0
Subtract 198 from 259 to get 61.
Grab the next digit (0) from the dividend, add it to 61, then carry on: 610 / 66

Step 6:
66 goes into 610 9 times with a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 14239.0
Deduct 594 from 610 and we're left with 16.
Bring next digit (0) of the dividend behind the 16 and repeat the process: 160 / 66

Step 7:
66 can be fit into 160 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 142392.0
Subtracting 132 from 160 leaves us with 28.
Bring next digit (9) of the dividend behind the 28 and repeat the process: 289 / 66

Let's proceed to step 8:
If we divide 289 by 66, we get 4 and a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 1423924.0
If we subtract 264 from 289, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
If we divide 250 by 66, we get 3 and a remainder of 52.
The number 3 becomes the next digit in our result. 
Result so far: 1423924.3
The remainder is 52 after subtracting 198 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 10:
66 can be fit into 520 7 times, resulting in a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 1423924.37
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 11:
66 goes into 580 8 times with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 1423924.378
If we subtract 528 from 580, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 12:
66 goes into 520 7 times with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 1423924.3787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 13:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 1423924.37878
The remainder is 52 after subtracting 528 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 14:
520 divided by 66 is 7 with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 1423924.378787
If we take 462 away from 520, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 15:
66 goes into 580 8 times with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 1423924.3787878
Subtract 528 from 580 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 16:
The number 66 fits into 520 7 times, leaving a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 1423924.37878787
If we take 462 away from 520, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The quotient of the division is 1423924.37878787, and the remainder is 5.8e-08.