509229 divided by 12 
We want to figure out the number of times 509229 can be divided by 12.

Moving on to step 1:
If we divide 5 by 12, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 12

Advancing to step 2:
12 can be fit into 50 4 times, resulting in a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 48 from 50 leaves us with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 12

Let's proceed to step 3:
When dividing 29 by 12, we get 2 with a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 42.0
Subtract 24 from 29 to get 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 12

Advancing to step 4:
If we divide 52 by 12, we get 4 and a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 424.0
If we subtract 48 from 52, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 12

Step 5:
12 goes into 42 3 times with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 4243.0
Deduct 36 from 42 and we're left with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 12

Going ahead to step 6:
69 divided by 12 is 5 with a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 42435.0
If we take 60 away from 69, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
12 goes into 90 7 times with a remainder of 6.
The next digit of our result is 7. 
Result so far: 42435.7
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
12 goes into 60 5 times with a remainder of 0.
The next digit of our result is 5. 
Result so far: 42435.75
Deduct 60 from 60 and we're left with 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:
12 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 42435.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42435.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 42435.75 and a remainder of 0.0.