We look at the division of 503043 by 9 
We want to figure out the number of times 503043 can be divided by 9.

Going ahead to step 1:
When dividing 5 by 9, we get 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 9

On to step 2:
50 divided by 9 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 45 from 50 to get 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 9

On to step 3:
If we divide 53 by 9, we get 5 and a remainder of 8.
The next digit of our result is 5. 
Result so far: 55.0
The remainder is 8 after subtracting 45 from 53.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 9

Step 4:
9 goes into 80 8 times with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 558.0
Subtracting 72 from 80 leaves us with 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 9

Step 5:
The number 9 fits into 84 9 times, leaving a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 5589.0
Deduct 81 from 84 and we're left with 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 9

Step 6:
9 goes into 33 3 times with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 55893.0
If we take 27 away from 33, we end up 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.

Step 7:
If we divide 60 by 9, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 55893.6
Subtracting 54 from 60 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:
When dividing 60 by 9, we get 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 55893.66
Subtracting 54 from 60 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.

Our division results in 55893.66 with a remaining 0.006.