We look at the division of 558142 by 66 
The aim is to understand the frequency of 66 in 558142.

Step 1:
5 divided by 66 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 66

Let's proceed to step 2:
55 divided by 66 is 0 with a remainder of 55.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 55 and we're left with 55.
Append the next digit (8) from the dividend to 55 and continue with: 558 / 66

Moving on to step 3:
66 goes into 558 8 times with a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 528 from 558, we get 30.
Append the next digit (1) from the dividend to 30 and continue with: 301 / 66

Step 4:
66 goes into 301 4 times with a remainder of 37.
Write down 4 as next digit of the result. 
Result so far: 84.0
If we take 264 away from 301, we end up with 37.
Take the next digit (4) from the dividend and append it to 37, then repeat: 374 / 66

Advancing to step 5:
374 divided by 66 is 5 with a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 845.0
Subtracting 330 from 374 leaves us with 44.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 66

Let's proceed to step 6:
66 can be fit into 442 6 times, resulting in a remainder of 46.
Write down 6 as next digit of the result. 
Result so far: 8456.0
Deduct 396 from 442 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.

Moving on to step 7:
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: 8456.6
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.

On to step 8:
66 goes into 640 9 times with a remainder of 46.
The next digit of our result is 9. 
Result so far: 8456.69
If we take 594 away from 640, we end up 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.

Moving on to step 9:
When dividing 460 by 66, we get 6 with a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 8456.696
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.

On to step 10:
When dividing 640 by 66, we get 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 8456.6969
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.

Advancing to step 11:
The number 66 fits into 460 6 times, leaving a remainder of 64.
The next digit of our result is 6. 
Result so far: 8456.69696
Subtract 396 from 460 to 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.

Advancing to step 12:
640 divided by 66 is 9 with a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 8456.696969
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.

On to step 13:
66 goes into 460 6 times with a remainder of 64.
The next digit of our result is 6. 
Result so far: 8456.6969696
Subtracting 396 from 460 leaves us 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.

Advancing to step 14:
66 goes into 640 9 times with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 8456.69696969
The remainder is 46 after subtracting 594 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Our division results in 8456.69696969 with a remaining 4.6e-08.