525753 ÷ 66 
The aim is to understand the frequency of 66 in 525753.

On to step 1:
If we divide 5 by 66, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 66

On to step 2:
The number 66 fits into 52 0 times, leaving a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Grab the next digit (5) from the dividend, add it to 52, then carry on: 525 / 66

On to step 3:
When dividing 525 by 66, we get 7 with a remainder of 63.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 63 after subtracting 462 from 525.
Grab the next digit (7) from the dividend, add it to 63, then carry on: 637 / 66

Moving on to step 4:
66 can be fit into 637 9 times, resulting in a remainder of 43.
Record the quotient 9 as the next digit in the result. 
Result so far: 79.0
If we take 594 away from 637, we end up with 43.
Bring next digit (5) of the dividend behind the 43 and repeat the process: 435 / 66

Let's proceed to step 5:
66 can be fit into 435 6 times, resulting in a remainder of 39.
The number 6 becomes the next digit in our result. 
Result so far: 796.0
If we subtract 396 from 435, we get 39.
Fetch the next digit (3) from the dividend, attach it to 39 and continue: 393 / 66

Moving on to step 6:
66 goes into 393 5 times with a remainder of 63.
The number 5 becomes the next digit in our result. 
Result so far: 7965.0
Subtract 330 from 393 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Moving on to step 7:
66 can be fit into 630 9 times, resulting in a remainder of 36.
Put 9 as the next digit of the answer. 
Result so far: 7965.9
If we subtract 594 from 630, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 8:
66 goes into 360 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 7965.95
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
When dividing 300 by 66, we get 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 7965.954
Subtract 264 from 300 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 10:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 7965.9545
Deduct 330 from 360 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 11:
300 divided by 66 is 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 7965.95454
If we subtract 264 from 300, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 12:
When dividing 360 by 66, we get 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 7965.954545
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 13:
66 goes into 300 4 times with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 7965.9545454
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 14:
360 divided by 66 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 7965.95454545
The remainder is 30 after subtracting 330 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 7965.95454545 with a balance of 3e-08.