The number 36 can be divided into the form of the sum of two natural numbers, what is the maximum value of the product of the two numbers obtained?
数36可以拆成两个自然数的和的形式，则所拆得的两个数的乘积的最大值是多少．
<gadget id="calculator">18 * 18</gadget>
<output>324</output>

<result>324</result>