Let's divide 649274 by 66
The aim is to understand the frequency of 66 in 649274.

On to step 1:
When dividing 6 by 66, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 66

Step 2:
66 can be fit into 64 0 times, resulting in a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Include the next digit (9) from the dividend after 64, then repeat: 649 / 66

On to step 3:
649 divided by 66 is 9 with a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 594 from 649 and we're left with 55.
Append the next digit (2) from the dividend to 55 and continue with: 552 / 66

Going ahead to step 4:
If we divide 552 by 66, we get 8 and a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 98.0
Subtract 528 from 552 to get 24.
Append the next digit (7) from the dividend to 24 and continue with: 247 / 66

Moving on to step 5:
The number 66 fits into 247 3 times, leaving a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 983.0
Deduct 198 from 247 and we're left with 49.
Take the next digit (4) from the dividend and append it to 49, then repeat: 494 / 66

On to step 6:
494 divided by 66 is 7 with a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 9837.0
If we take 462 away from 494, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
66 goes into 320 4 times with a remainder of 56.
The next digit of our result is 4. 
Result so far: 9837.4
If we take 264 away from 320, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 8:
The number 66 fits into 560 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 9837.48
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 9:
If we divide 320 by 66, we get 4 and a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 9837.484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 10:
When dividing 560 by 66, we get 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 9837.4848
Subtracting 528 from 560 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 11:
The number 66 fits into 320 4 times, leaving a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 9837.48484
The remainder is 56 after subtracting 264 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
When dividing 560 by 66, we get 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 9837.484848
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 13:
66 can be fit into 320 4 times, resulting in a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 9837.4848484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 14:
66 goes into 560 8 times with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 9837.48484848
If we take 528 away from 560, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 9837.48484848, with a leftover of 3.2e-08.