We're dividing 89086 by 66 
The aim is to understand the frequency of 66 in 89086.

On to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 66

Going ahead to step 2:
If we divide 89 by 66, we get 1 and a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 66 from 89 leaves us with 23.
Bring next digit (0) of the dividend behind the 23 and repeat the process: 230 / 66

Moving on to step 3:
If we divide 230 by 66, we get 3 and a remainder of 32.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
The remainder is 32 after subtracting 198 from 230.
Grab the next digit (8) from the dividend, add it to 32, then carry on: 328 / 66

Step 4:
The number 66 fits into 328 4 times, leaving a remainder of 64.
Write down 4 as next digit of the result. 
Result so far: 134.0
If we take 264 away from 328, we end up with 64.
Grab the next digit (6) from the dividend, add it to 64, then carry on: 646 / 66

Step 5:
646 divided by 66 is 9 with a remainder of 52.
Write down 9 as next digit of the result. 
Result so far: 1349.0
The remainder is 52 after subtracting 594 from 646.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 6:
When dividing 520 by 66, we get 7 with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 1349.7
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 7:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 1349.78
Deduct 528 from 580 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 8:
If we divide 520 by 66, we get 7 and a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 1349.787
Subtracting 462 from 520 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
66 can be fit into 580 8 times, resulting in a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 1349.7878
Subtracting 528 from 580 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 10:
66 goes into 520 7 times with a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 1349.78787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 11:
The number 66 fits into 580 8 times, leaving a remainder of 52.
The next digit of our result is 8. 
Result so far: 1349.787878
Subtracting 528 from 580 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 12:
66 can be fit into 520 7 times, resulting in a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 1349.7878787
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 13:
When dividing 580 by 66, we get 8 with a remainder of 52.
The next digit of our result is 8. 
Result so far: 1349.78787878
Subtract 528 from 580 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Our division results in 1349.78787878 with a remaining 5.2e-08.