873035 ÷ 66 
The aim is to understand the frequency of 66 in 873035.

Let's proceed to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 66

Moving on to step 2:
The number 66 fits into 87 1 times, leaving a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 66 from 87, we get 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 66

On to step 3:
213 divided by 66 is 3 with a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 198 from 213 leaves us with 15.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 66

Advancing to step 4:
When dividing 150 by 66, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 132.0
If we take 132 away from 150, we end up with 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 66

Let's proceed to step 5:
If we divide 183 by 66, we get 2 and a remainder of 51.
Record the quotient 2 as the next digit in the result. 
Result so far: 1322.0
Subtract 132 from 183 to get 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 66

Moving on to step 6:
When dividing 515 by 66, we get 7 with a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 13227.0
If we take 462 away from 515, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

On to step 7:
The number 66 fits into 530 8 times, leaving a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 13227.8
The remainder is 2 after subtracting 528 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
The number 66 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 13227.8
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
66 goes into 200 3 times with a remainder of 2.
The next digit of our result is 3. 
Result so far: 13227.803
Subtract 198 from 200 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
The number 66 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 13227.803
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
If we divide 200 by 66, we get 3 and a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 13227.80303
Subtracting 198 from 200 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
The number 66 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 13227.80303
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 13:
The number 66 fits into 200 3 times, leaving a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 13227.8030303
The remainder is 2 after subtracting 198 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
20 divided by 66 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 13227.8030303
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 13227.8030303, with a leftover of 2e-08.