We look at the division of 735501 by 27 
The aim is to understand the frequency of 27 in 735501.

On to step 1:
27 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 27

Going ahead to step 2:
The number 27 fits into 73 2 times, leaving a remainder of 19.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 54 from 73, we get 19.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 27

Advancing to step 3:
195 divided by 27 is 7 with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Deduct 189 from 195 and we're left with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 27

Going ahead to step 4:
The number 27 fits into 65 2 times, leaving a remainder of 11.
Put 2 as the next digit of the answer. 
Result so far: 272.0
Subtracting 54 from 65 leaves us with 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 27

Moving on to step 5:
The number 27 fits into 110 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 2724.0
Subtracting 108 from 110 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 27

Advancing to step 6:
If we divide 21 by 27, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 27240.0
If we take 0 away from 21, 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.

Going ahead to step 7:
The number 27 fits into 210 7 times, leaving a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 27240.7
Subtract 189 from 210 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 8:
The number 27 fits into 210 7 times, leaving a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 27240.77
Subtracting 189 from 210 leaves us 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.

The final outcome is 27240.77, with a leftover of 0.021.