We're dividing 428475 by 27 
We want to figure out the number of times 428475 can be divided by 27.

On to step 1:
27 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 27

Step 2:
27 goes into 42 1 times with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 27 from 42, we get 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 27

Let's proceed to step 3:
27 can be fit into 158 5 times, resulting in a remainder of 23.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 135 from 158 and we're left with 23.
Bring next digit (4) of the dividend behind the 23 and repeat the process: 234 / 27

Advancing to step 4:
27 can be fit into 234 8 times, resulting in a remainder of 18.
The next digit of our result is 8. 
Result so far: 158.0
Subtract 216 from 234 to get 18.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 27

On to step 5:
The number 27 fits into 187 6 times, leaving a remainder of 25.
Write down 6 as next digit of the result. 
Result so far: 1586.0
Subtract 162 from 187 to get 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 27

Step 6:
27 can be fit into 255 9 times, resulting in a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 15869.0
The remainder is 12 after subtracting 243 from 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
27 can be fit into 120 4 times, resulting in a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 15869.4
If we take 108 away from 120, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
120 divided by 27 is 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 15869.44
Subtracting 108 from 120 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 15869.44 with a remaining 0.012.