518703 divided by 12 
Let's see how many times 12 fits into 518703.

Let's proceed to step 1:
5 divided by 12 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 12

Advancing to step 2:
12 can be fit into 51 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 3 after subtracting 48 from 51.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 12

Going ahead to step 3:
12 can be fit into 38 3 times, resulting in a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 43.0
The remainder is 2 after subtracting 36 from 38.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 12

Step 4:
The number 12 fits into 27 2 times, leaving a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 432.0
Subtract 24 from 27 to get 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 12

On to step 5:
12 goes into 30 2 times with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 4322.0
If we subtract 24 from 30, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 12

Moving on to step 6:
12 goes into 63 5 times with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 43225.0
If we take 60 away from 63, 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.

Going ahead to step 7:
If we divide 30 by 12, we get 2 and a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 43225.2
Subtracting 24 from 30 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
60 divided by 12 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 43225.25
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.

Going ahead to step 9:
0 divided by 12 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 43225.25
Deduct 0 from 0 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.

On to step 10:
The number 12 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 43225.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 43225.25 with a remainder of 0.0.