Let's divide 909613 by 66
The aim is to understand the frequency of 66 in 909613.

Moving on to step 1:
The number 66 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 66

Going ahead to step 2:
66 can be fit into 90 1 times, resulting in a remainder of 24.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 66 from 90, we get 24.
Append the next digit (9) from the dividend to 24 and continue with: 249 / 66

Step 3:
When dividing 249 by 66, we get 3 with a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 198 from 249 and we're left with 51.
Take the next digit (6) from the dividend and append it to 51, then repeat: 516 / 66

On to step 4:
If we divide 516 by 66, we get 7 and a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 137.0
Subtracting 462 from 516 leaves us with 54.
Include the next digit (1) from the dividend after 54, then repeat: 541 / 66

Let's proceed to step 5:
If we divide 541 by 66, we get 8 and a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 1378.0
If we subtract 528 from 541, we get 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 66

Going ahead to step 6:
When dividing 133 by 66, we get 2 with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 13782.0
Deduct 132 from 133 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
The number 66 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 13782.0
Subtracting 0 from 10 leaves us 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.

Going ahead to step 8:
The number 66 fits into 100 1 times, leaving a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 13782.01
If we take 66 away from 100, we end up 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:
When dividing 340 by 66, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 13782.015
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.

Advancing to step 10:
66 can be fit into 100 1 times, resulting in a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 13782.0151
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.

Going ahead to step 11:
66 can be fit into 340 5 times, resulting in a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 13782.01515
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.

Advancing to step 12:
100 divided by 66 is 1 with a remainder of 34.
Record the quotient 1 as the next digit in the result. 
Result so far: 13782.015151
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.

Step 13:
If we divide 340 by 66, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 13782.0151515
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.

On to step 14:
66 goes into 100 1 times with a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 13782.01515151
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.

The final result is 13782.01515151 with a remainder of 3.4e-08.