We're dividing 500099 by 66 
The aim is to understand the frequency of 66 in 500099.

Step 1:
If we divide 5 by 66, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 66

Advancing to step 2:
The number 66 fits into 50 0 times, leaving a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Bring next digit (0) of the dividend behind the 50 and repeat the process: 500 / 66

Step 3:
66 can be fit into 500 7 times, resulting in a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 462 away from 500, we end up with 38.
Append the next digit (0) from the dividend to 38 and continue with: 380 / 66

Step 4:
When dividing 380 by 66, we get 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 75.0
The remainder is 50 after subtracting 330 from 380.
Bring next digit (9) of the dividend behind the 50 and repeat the process: 509 / 66

Moving on to step 5:
509 divided by 66 is 7 with a remainder of 47.
Record the quotient 7 as the next digit in the result. 
Result so far: 757.0
If we take 462 away from 509, we end up with 47.
Take the next digit (9) from the dividend and append it to 47, then repeat: 479 / 66

Advancing to step 6:
If we divide 479 by 66, we get 7 and a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 7577.0
If we subtract 462 from 479, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
170 divided by 66 is 2 with a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 7577.2
Deduct 132 from 170 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 8:
380 divided by 66 is 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 7577.25
Subtract 330 from 380 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 7577.257
If we subtract 462 from 500, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 10:
66 goes into 380 5 times with a remainder of 50.
The next digit of our result is 5. 
Result so far: 7577.2575
The remainder is 50 after subtracting 330 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 11:
When dividing 500 by 66, we get 7 with a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 7577.25757
Subtract 462 from 500 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 12:
If we divide 380 by 66, we get 5 and a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 7577.257575
If we take 330 away from 380, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 13:
66 can be fit into 500 7 times, resulting in a remainder of 38.
The number 7 becomes the next digit in our result. 
Result so far: 7577.2575757
Deduct 462 from 500 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 14:
66 can be fit into 380 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 7577.25757575
If we subtract 330 from 380, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 7577.25757575, with a leftover of 5e-08.