Divide 12 into the sum of two natural numbers, and then find the product of these two natural numbers. To make the product the largest, how many parts should it be divided into?
把12拆分成两个自然数的和，再求出这两个自然数的积，要使这个积最大，应该拆分成多少．
<gadget id="calculator">6 + 6</gadget>
<output>12</output>

<result>12</result>