97771 divided by 66 
The aim is to understand the frequency of 66 in 97771.

On to step 1:
9 divided by 66 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 66

Going ahead to step 2:
66 goes into 97 1 times with a remainder of 31.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 31 after subtracting 66 from 97.
Append the next digit (7) from the dividend to 31 and continue with: 317 / 66

Step 3:
If we divide 317 by 66, we get 4 and a remainder of 53.
The next digit of our result is 4. 
Result so far: 14.0
If we subtract 264 from 317, we get 53.
Fetch the next digit (7) from the dividend, attach it to 53 and continue: 537 / 66

On to step 4:
If we divide 537 by 66, we get 8 and a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 148.0
If we subtract 528 from 537, we get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 66

Step 5:
66 can be fit into 91 1 times, resulting in a remainder of 25.
The number 1 becomes the next digit in our result. 
Result so far: 1481.0
Subtract 66 from 91 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 6:
The number 66 fits into 250 3 times, leaving a remainder of 52.
Use 3 as the next digit of our solution. 
Result so far: 1481.3
Subtract 198 from 250 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.

Step 7:
If we divide 520 by 66, we get 7 and a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 1481.37
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.

Step 8:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 1481.378
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.

Advancing to step 9:
66 can be fit into 520 7 times, resulting in a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 1481.3787
The remainder is 58 after subtracting 462 from 520.
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 10:
If we divide 580 by 66, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 1481.37878
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.

On to step 11:
The number 66 fits into 520 7 times, leaving a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 1481.378787
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.

On to step 12:
If we divide 580 by 66, we get 8 and a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 1481.3787878
The remainder is 52 after subtracting 528 from 580.
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 13:
66 can be fit into 520 7 times, resulting in a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 1481.37878787
Deduct 462 from 520 and we're left 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.

In conclusion, the division gives 1481.37878787 with a balance of 5.8e-08.