For two numbers A and B, it is stipulated that A▽B=A*B/2, please calculate: 6▽2▽5=how much.
对于两个数A、B，规定A▽B=A*B/2，请你计算：6▽2▽5=多少．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">6 * (5/2)</gadget>
<output>15</output>

<result>15</result>