641325 ÷ 27 
The aim is to understand the frequency of 27 in 641325.

Step 1:
6 divided by 27 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 27

Let's proceed to step 2:
27 can be fit into 64 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 10 after subtracting 54 from 64.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 27

On to step 3:
If we divide 101 by 27, we get 3 and a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Subtract 81 from 101 to get 20.
Bring next digit (3) of the dividend behind the 20 and repeat the process: 203 / 27

Advancing to step 4:
If we divide 203 by 27, we get 7 and a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 237.0
Subtract 189 from 203 to get 14.
Include the next digit (2) from the dividend after 14, then repeat: 142 / 27

Going ahead to step 5:
If we divide 142 by 27, we get 5 and a remainder of 7.
The next digit of our result is 5. 
Result so far: 2375.0
Deduct 135 from 142 and we're left with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 27

Step 6:
75 divided by 27 is 2 with a remainder of 21.
The next digit of our result is 2. 
Result so far: 23752.0
The remainder is 21 after subtracting 54 from 75.
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:
The number 27 fits into 210 7 times, leaving a remainder of 21.
The next digit of our result is 7. 
Result so far: 23752.7
If we subtract 189 from 210, we 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.

On to step 8:
27 can be fit into 210 7 times, resulting in a remainder of 21.
The number 7 becomes the next digit in our result. 
Result so far: 23752.77
The remainder is 21 after subtracting 189 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final result is 23752.77 with a remainder of 0.021.