There are 8 points in the pentagon, how many small triangles can be formed by taking the 5 vertices of the pentagon and these 8 points as the vertices of the triangle.
五边形内有8个点，以五边形的5个顶点和这8个点为三角形的顶点，最多能组成多少个小三角形．
<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">13 * 12 * 11</gadget>
<output>1_716</output>

<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">1_716 / 6</gadget>
<output>286</output>

<result>286</result>