Provide your best answer for the following math problem. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The problem is: if x and y are positive integers and 18 x = 12 y what is the least possible value of xy ?
36
2 * 2 * 3 * 3 = 144.