72584265 ÷ 66 
The aim is to understand the frequency of 66 in 72584265.

Advancing to step 1:
66 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 66

On to step 2:
66 goes into 72 1 times with a remainder of 6.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 66 from 72 and we're left with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 66

On to step 3:
If we divide 65 by 66, we get 0 and a remainder of 65.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 65 to get 65.
Include the next digit (8) from the dividend after 65, then repeat: 658 / 66

Advancing to step 4:
658 divided by 66 is 9 with a remainder of 64.
Use 9 as the next digit of our solution. 
Result so far: 109.0
If we take 594 away from 658, we end up with 64.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 66

On to step 5:
66 can be fit into 644 9 times, resulting in a remainder of 50.
The next digit of our result is 9. 
Result so far: 1099.0
If we take 594 away from 644, we end up with 50.
Include the next digit (2) from the dividend after 50, then repeat: 502 / 66

Step 6:
The number 66 fits into 502 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 10997.0
Subtract 462 from 502 to get 40.
Append the next digit (6) from the dividend to 40 and continue with: 406 / 66

On to step 7:
66 can be fit into 406 6 times, resulting in a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 109976.0
If we subtract 396 from 406, we get 10.
Include the next digit (5) from the dividend after 10, then repeat: 105 / 66

Going ahead to step 8:
66 can be fit into 105 1 times, resulting in a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 1099761.0
The remainder is 39 after subtracting 66 from 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 9:
66 goes into 390 5 times with a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 1099761.5
Subtract 330 from 390 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
66 goes into 600 9 times with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 1099761.59
Subtract 594 from 600 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 11:
66 goes into 60 0 times with a remainder of 60.
The next digit of our result is 0. 
Result so far: 1099761.59
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
66 goes into 600 9 times with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 1099761.5909
The remainder is 6 after subtracting 594 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
The number 66 fits into 60 0 times, leaving a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 1099761.5909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 14:
When dividing 600 by 66, we get 9 with a remainder of 6.
The next digit of our result is 9. 
Result so far: 1099761.590909
Deduct 594 from 600 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 15:
60 divided by 66 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 1099761.590909
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 16:
66 can be fit into 600 9 times, resulting in a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 1099761.59090909
Deduct 594 from 600 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 1099761.59090909 with a remainder of 6e-09.