859259 ÷ 66 
The aim is to understand the frequency of 66 in 859259.

Moving on to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 66

Going ahead to step 2:
If we divide 85 by 66, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 66 from 85 leaves us with 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 66

On to step 3:
66 goes into 199 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 198 from 199 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 66

On to step 4:
The number 66 fits into 12 0 times, leaving a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 130.0
If we subtract 0 from 12, we get 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 66

Let's proceed to step 5:
66 goes into 125 1 times with a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 1301.0
The remainder is 59 after subtracting 66 from 125.
Fetch the next digit (9) from the dividend, attach it to 59 and continue: 599 / 66

Moving on to step 6:
66 goes into 599 9 times with a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 13019.0
If we subtract 594 from 599, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
50 divided by 66 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 13019.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
66 goes into 500 7 times with a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 13019.07
Subtract 462 from 500 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 9:
66 goes into 380 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 13019.075
If we take 330 away from 380, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 10:
The number 66 fits into 500 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 13019.0757
Subtract 462 from 500 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 11:
66 can be fit into 380 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 13019.07575
If we take 330 away from 380, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
66 can be fit into 500 7 times, resulting in a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 13019.075757
If we subtract 462 from 500, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 13:
66 can be fit into 380 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 13019.0757575
If we take 330 away from 380, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 14:
66 can be fit into 500 7 times, resulting in a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 13019.07575757
If we subtract 462 from 500, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final result is 13019.07575757 with a remainder of 3.8e-08.