Let's divide 996886 by 66
The aim is to understand the frequency of 66 in 996886.

Step 1:
9 divided by 66 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 66

On to step 2:
66 can be fit into 99 1 times, resulting in a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 66 away from 99, we end up with 33.
Fetch the next digit (6) from the dividend, attach it to 33 and continue: 336 / 66

On to step 3:
66 goes into 336 5 times with a remainder of 6.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we take 330 away from 336, we end up with 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 66

Moving on to step 4:
68 divided by 66 is 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 151.0
Subtracting 66 from 68 leaves us with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 66

Advancing to step 5:
The number 66 fits into 28 0 times, leaving a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 1510.0
Deduct 0 from 28 and we're left with 28.
Grab the next digit (6) from the dividend, add it to 28, then carry on: 286 / 66

Let's proceed to step 6:
The number 66 fits into 286 4 times, leaving a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 15104.0
Deduct 264 from 286 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
If we divide 220 by 66, we get 3 and a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 15104.3
Deduct 198 from 220 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
66 can be fit into 220 3 times, resulting in a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 15104.33
Deduct 198 from 220 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 15104.33 with a remaining 0.022.