We look at the division of 426090 by 27 
The aim is to understand the frequency of 27 in 426090.

Let's proceed to step 1:
27 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 27

Moving on to step 2:
If we divide 42 by 27, we get 1 and a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 27 from 42, we get 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 27

Advancing to step 3:
27 goes into 156 5 times with a remainder of 21.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 21 after subtracting 135 from 156.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 27

On to step 4:
210 divided by 27 is 7 with a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 157.0
Subtract 189 from 210 to get 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 27

Moving on to step 5:
27 can be fit into 219 8 times, resulting in a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 1578.0
Deduct 216 from 219 and we're left with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 27

On to step 6:
27 goes into 30 1 times with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 15781.0
Subtract 27 from 30 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 7:
27 goes into 30 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 15781.1
If we take 27 away from 30, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
The number 27 fits into 30 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 15781.11
The remainder is 3 after subtracting 27 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The quotient of the division is 15781.11, and the remainder is 0.003.