543801 divided by 27 
The aim is to understand the frequency of 27 in 543801.

On to step 1:
If we divide 5 by 27, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 27

Let's proceed to step 2:
When dividing 54 by 27, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 54 from 54 and we're left with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 27

Step 3:
27 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 27

Moving on to step 4:
38 divided by 27 is 1 with a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 201.0
Subtract 27 from 38 to get 11.
Append the next digit (0) from the dividend to 11 and continue with: 110 / 27

Going ahead to step 5:
27 goes into 110 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 2014.0
Subtracting 108 from 110 leaves us with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 27

Advancing to step 6:
21 divided by 27 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 20140.0
Subtract 0 from 21 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
When dividing 210 by 27, we get 7 with a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 20140.7
If we take 189 away from 210, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 8:
The number 27 fits into 210 7 times, leaving a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 20140.77
Deduct 189 from 210 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

In conclusion, the division gives 20140.77 with a balance of 0.021.