For two numbers A and B, it is stipulated that A*B=A*B/2, how much is 5*6
对于两个数A、B，规定A*B=A*B/2，求5*6多少
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>