Answer:
3.70
Explanation:
9 divided by 2.43
To divide decimal numbers we need to remove the decimal point

Now use long division to divide the numbers
 3.70370
 -------------------------------- 
 243 900
 729
 ---------------------------(subtract)
 1710 (add decimal point at top)
 1701
 ---------------------------
 900 (add 0 at top)
 729 
 ---------------------------(subtract)
 1710 (add decimal point at top)
 1701
 ---------------------------
 9
So answer is 3.70