We look at the division of 120809 by 4 
Let's see how many times 4 fits into 120809.

On to step 1:
When dividing 1 by 4, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 4

Step 2:
The number 4 fits into 12 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 12 from 12 leaves us with 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 4

Step 3:
When dividing 0 by 4, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 30.0
If we take 0 away from 0, we end up with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 4

On to step 4:
When dividing 8 by 4, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 302.0
Subtracting 8 from 8 leaves us with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 4

On to step 5:
If we divide 0 by 4, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3020.0
Subtract 0 from 0 to get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 4

Going ahead to step 6:
The number 4 fits into 9 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 30202.0
Deduct 8 from 9 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
If we divide 10 by 4, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 30202.2
Subtracting 8 from 10 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
If we divide 20 by 4, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 30202.25
If we subtract 20 from 20, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 30202.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
4 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 30202.25
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 30202.25 with a balance of 0.0.