We look at the division of 646952 by 66 
The aim is to understand the frequency of 66 in 646952.

Going ahead to step 1:
66 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 66

Step 2:
64 divided by 66 is 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Bring next digit (6) of the dividend behind the 64 and repeat the process: 646 / 66

Step 3:
When dividing 646 by 66, we get 9 with a remainder of 52.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 594 from 646, we get 52.
Include the next digit (9) from the dividend after 52, then repeat: 529 / 66

Advancing to step 4:
66 goes into 529 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 98.0
Deduct 528 from 529 and we're left with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 66

Advancing to step 5:
66 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 980.0
Subtracting 0 from 15 leaves us with 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 66

Moving on to step 6:
66 can be fit into 152 2 times, resulting in a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 9802.0
Deduct 132 from 152 and we're left 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 7:
The number 66 fits into 200 3 times, leaving a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 9802.3
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.

On to step 8:
66 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 9802.3
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.

Advancing to step 9:
If we divide 200 by 66, we get 3 and a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 9802.303
If we take 198 away from 200, we end up 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.

Advancing to step 10:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 9802.303
If we take 0 away from 20, we end up 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.

Let's proceed to step 11:
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: 9802.30303
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.

Moving on to step 12:
66 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 9802.30303
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.

Moving on to step 13:
When dividing 200 by 66, we get 3 with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 9802.3030303
The remainder is 2 after subtracting 198 from 200.
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 14:
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: 9802.3030303
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.

After the division, we end up with 9802.3030303 and a remainder of 2e-08.