We look at the division of 64995705 by 866 
The aim is to understand the frequency of 866 in 64995705.

Moving on to step 1:
866 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 866

Let's proceed to step 2:
If we divide 64 by 866, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Append the next digit (9) from the dividend to 64 and continue with: 649 / 866

On to step 3:
866 can be fit into 649 0 times, resulting in a remainder of 649.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 649, we end up with 649.
Include the next digit (9) from the dividend after 649, then repeat: 6499 / 866

Let's proceed to step 4:
The number 866 fits into 6499 7 times, leaving a remainder of 437.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 6062 from 6499, we get 437.
Fetch the next digit (5) from the dividend, attach it to 437 and continue: 4375 / 866

Step 5:
866 can be fit into 4375 5 times, resulting in a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
Deduct 4330 from 4375 and we're left with 45.
Bring next digit (7) of the dividend behind the 45 and repeat the process: 457 / 866

Step 6:
If we divide 457 by 866, we get 0 and a remainder of 457.
Record the quotient 0 as the next digit in the result. 
Result so far: 750.0
Subtract 0 from 457 to get 457.
Append the next digit (0) from the dividend to 457 and continue with: 4570 / 866

On to step 7:
866 can be fit into 4570 5 times, resulting in a remainder of 240.
The next digit of our result is 5. 
Result so far: 7505.0
Subtracting 4330 from 4570 leaves us with 240.
Append the next digit (5) from the dividend to 240 and continue with: 2405 / 866

Moving on to step 8:
The number 866 fits into 2405 2 times, leaving a remainder of 673.
Put 2 as the next digit of the answer. 
Result so far: 75052.0
The remainder is 673 after subtracting 1732 from 2405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6730, and continue the process.

Going ahead to step 9:
The number 866 fits into 6730 7 times, leaving a remainder of 668.
The number 7 becomes the next digit in our result. 
Result so far: 75052.7
Deduct 6062 from 6730 and we're left with 668.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

Let's proceed to step 10:
866 goes into 6680 7 times with a remainder of 618.
Record the quotient 7 as the next digit in the result. 
Result so far: 75052.77
The remainder is 618 after subtracting 6062 from 6680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

The quotient of the division is 75052.77, and the remainder is 0.618.