Let's divide 509299 by 12
Let's see how many times 12 fits into 509299.

Step 1:
12 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 12

On to step 2:
50 divided by 12 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 48 from 50 and we're left with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 12

Let's proceed to step 3:
12 can be fit into 29 2 times, resulting in a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we take 24 away from 29, we end up with 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 12

Advancing to step 4:
12 goes into 52 4 times with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 424.0
If we subtract 48 from 52, we get 4.
Include the next digit (9) from the dividend after 4, then repeat: 49 / 12

Step 5:
49 divided by 12 is 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 4244.0
If we take 48 away from 49, we end up with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 12

Moving on to step 6:
12 can be fit into 19 1 times, resulting in a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 42441.0
Subtract 12 from 19 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
When dividing 70 by 12, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 42441.5
If we take 60 away from 70, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
12 goes into 100 8 times with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 42441.58
Subtracting 96 from 100 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
12 can be fit into 40 3 times, resulting in a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 42441.583
If we subtract 36 from 40, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 42441.5833
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

After the division, we end up with 42441.5833 and a remainder of 4e-05.