631239 ÷ 27 
The aim is to understand the frequency of 27 in 631239.

On to step 1:
The number 27 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 27

Let's proceed to step 2:
27 goes into 63 2 times with a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 54 from 63 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 27

On to step 3:
91 divided by 27 is 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 23.0
If we subtract 81 from 91, we get 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 27

Let's proceed to step 4:
27 goes into 102 3 times with a remainder of 21.
The next digit of our result is 3. 
Result so far: 233.0
Subtract 81 from 102 to get 21.
Take the next digit (3) from the dividend and append it to 21, then repeat: 213 / 27

Advancing to step 5:
The number 27 fits into 213 7 times, leaving a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 2337.0
Subtract 189 from 213 to get 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 27

Going ahead to step 6:
If we divide 249 by 27, we get 9 and a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 23379.0
The remainder is 6 after subtracting 243 from 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
If we divide 60 by 27, we get 2 and a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 23379.2
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 8:
27 can be fit into 60 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 23379.22
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 23379.22 with a remainder of 0.006.