We look at the division of 603286 by 66 
The aim is to understand the frequency of 66 in 603286.

Let's proceed to step 1:
If we divide 6 by 66, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 66

On to step 2:
60 divided by 66 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 60, we end up with 60.
Fetch the next digit (3) from the dividend, attach it to 60 and continue: 603 / 66

Advancing to step 3:
603 divided by 66 is 9 with a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 594 from 603 leaves us with 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 66

Let's proceed to step 4:
When dividing 92 by 66, we get 1 with a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
The remainder is 26 after subtracting 66 from 92.
Fetch the next digit (8) from the dividend, attach it to 26 and continue: 268 / 66

Going ahead to step 5:
66 goes into 268 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 914.0
Deduct 264 from 268 and we're left with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 66

Moving on to step 6:
66 goes into 46 0 times with a remainder of 46.
The number 0 becomes the next digit in our result. 
Result so far: 9140.0
Subtracting 0 from 46 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
When dividing 460 by 66, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 9140.6
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 8:
640 divided by 66 is 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 9140.69
Subtract 594 from 640 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
If we divide 460 by 66, we get 6 and a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 9140.696
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 10:
640 divided by 66 is 9 with a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 9140.6969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 11:
66 goes into 460 6 times with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 9140.69696
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 12:
If we divide 640 by 66, we get 9 and a remainder of 46.
The next digit of our result is 9. 
Result so far: 9140.696969
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 13:
460 divided by 66 is 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 9140.6969696
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 14:
When dividing 640 by 66, we get 9 with a remainder of 46.
Use 9 as the next digit of our solution. 
Result so far: 9140.69696969
If we subtract 594 from 640, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final outcome is 9140.69696969, with a leftover of 4.6e-08.