We look at the division of 85779943 by 966 
The aim is to understand the frequency of 966 in 85779943.

Advancing to step 1:
The number 966 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 966

Advancing to step 2:
The number 966 fits into 85 0 times, leaving a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Bring next digit (7) of the dividend behind the 85 and repeat the process: 857 / 966

On to step 3:
The number 966 fits into 857 0 times, leaving a remainder of 857.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 857, we get 857.
Append the next digit (7) from the dividend to 857 and continue with: 8577 / 966

Moving on to step 4:
The number 966 fits into 8577 8 times, leaving a remainder of 849.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 7728 away from 8577, we end up with 849.
Take the next digit (9) from the dividend and append it to 849, then repeat: 8499 / 966

Let's proceed to step 5:
The number 966 fits into 8499 8 times, leaving a remainder of 771.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
If we take 7728 away from 8499, we end up with 771.
Fetch the next digit (9) from the dividend, attach it to 771 and continue: 7719 / 966

Advancing to step 6:
If we divide 7719 by 966, we get 7 and a remainder of 957.
Use 7 as the next digit of our solution. 
Result so far: 887.0
The remainder is 957 after subtracting 6762 from 7719.
Grab the next digit (4) from the dividend, add it to 957, then carry on: 9574 / 966

Going ahead to step 7:
If we divide 9574 by 966, we get 9 and a remainder of 880.
Put 9 as the next digit of the answer. 
Result so far: 8879.0
If we take 8694 away from 9574, we end up with 880.
Append the next digit (3) from the dividend to 880 and continue with: 8803 / 966

Going ahead to step 8:
If we divide 8803 by 966, we get 9 and a remainder of 109.
Use 9 as the next digit of our solution. 
Result so far: 88799.0
Subtracting 8694 from 8803 leaves us with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Advancing to step 9:
If we divide 1090 by 966, we get 1 and a remainder of 124.
Use 1 as the next digit of our solution. 
Result so far: 88799.1
Subtract 966 from 1090 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 10:
When dividing 1240 by 966, we get 1 with a remainder of 274.
Put 1 as the next digit of the answer. 
Result so far: 88799.11
Deduct 966 from 1240 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

The final result is 88799.11 with a remainder of 0.274.