Let's divide 309060 by 81
The aim is to understand the frequency of 81 in 309060.

Let's proceed to step 1:
When dividing 3 by 81, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 81

Let's proceed to step 2:
81 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Take the next digit (9) from the dividend and append it to 30, then repeat: 309 / 81

Let's proceed to step 3:
The number 81 fits into 309 3 times, leaving a remainder of 66.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 243 from 309 and we're left with 66.
Include the next digit (0) from the dividend after 66, then repeat: 660 / 81

Moving on to step 4:
If we divide 660 by 81, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 648 from 660 to get 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 81

Let's proceed to step 5:
126 divided by 81 is 1 with a remainder of 45.
Put 1 as the next digit of the answer. 
Result so far: 381.0
If we take 81 away from 126, we end up with 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 81

Step 6:
81 goes into 450 5 times with a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 3815.0
Subtracting 405 from 450 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 7:
450 divided by 81 is 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 3815.5
Deduct 405 from 450 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 8:
If we divide 450 by 81, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 3815.55
The remainder is 45 after subtracting 405 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

In conclusion, the division gives 3815.55 with a balance of 0.045.