Let's divide 480753 by 81
The aim is to understand the frequency of 81 in 480753.

Going ahead to step 1:
The number 81 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 81

Moving on to step 2:
If we divide 48 by 81, we get 0 and a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 48 leaves us with 48.
Append the next digit (0) from the dividend to 48 and continue with: 480 / 81

On to step 3:
81 goes into 480 5 times with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 405 from 480 and we're left with 75.
Take the next digit (7) from the dividend and append it to 75, then repeat: 757 / 81

Going ahead to step 4:
If we divide 757 by 81, we get 9 and a remainder of 28.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
Subtracting 729 from 757 leaves us with 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 81

Step 5:
81 goes into 285 3 times with a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 593.0
The remainder is 42 after subtracting 243 from 285.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 81

On to step 6:
If we divide 423 by 81, we get 5 and a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 5935.0
The remainder is 18 after subtracting 405 from 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
81 goes into 180 2 times with a remainder of 18.
The next digit of our result is 2. 
Result so far: 5935.2
Subtract 162 from 180 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 8:
81 can be fit into 180 2 times, resulting in a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 5935.22
Subtracting 162 from 180 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 5935.22 with a remainder of 0.018.