99016766 divided by 691 
The aim is to understand the frequency of 691 in 99016766.

Advancing to step 1:
If we divide 9 by 691, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 691

Going ahead to step 2:
691 can be fit into 99 0 times, resulting in a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Append the next digit (0) from the dividend to 99 and continue with: 990 / 691

Going ahead to step 3:
990 divided by 691 is 1 with a remainder of 299.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 691 away from 990, we end up with 299.
Bring next digit (1) of the dividend behind the 299 and repeat the process: 2991 / 691

On to step 4:
When dividing 2991 by 691, we get 4 with a remainder of 227.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 2764 from 2991, we get 227.
Bring next digit (6) of the dividend behind the 227 and repeat the process: 2276 / 691

On to step 5:
691 can be fit into 2276 3 times, resulting in a remainder of 203.
Record the quotient 3 as the next digit in the result. 
Result so far: 143.0
The remainder is 203 after subtracting 2073 from 2276.
Append the next digit (7) from the dividend to 203 and continue with: 2037 / 691

Advancing to step 6:
When dividing 2037 by 691, we get 2 with a remainder of 655.
The number 2 becomes the next digit in our result. 
Result so far: 1432.0
Subtract 1382 from 2037 to get 655.
Fetch the next digit (6) from the dividend, attach it to 655 and continue: 6556 / 691

Step 7:
The number 691 fits into 6556 9 times, leaving a remainder of 337.
The next digit of our result is 9. 
Result so far: 14329.0
Deduct 6219 from 6556 and we're left with 337.
Take the next digit (6) from the dividend and append it to 337, then repeat: 3376 / 691

Moving on to step 8:
691 can be fit into 3376 4 times, resulting in a remainder of 612.
The number 4 becomes the next digit in our result. 
Result so far: 143294.0
Deduct 2764 from 3376 and we're left with 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Step 9:
691 goes into 6120 8 times with a remainder of 592.
The number 8 becomes the next digit in our result. 
Result so far: 143294.8
Subtract 5528 from 6120 to get 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Advancing to step 10:
If we divide 5920 by 691, we get 8 and a remainder of 392.
Put 8 as the next digit of the answer. 
Result so far: 143294.88
If we subtract 5528 from 5920, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

The final result is 143294.88 with a remainder of 0.392.