There are 10 points on the circumference of a circle. How many triangles have these points as vertices?
在一个圆的周长上，有10个点．以这些点为顶点的三角形一共有多少个．
<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">8 / 6</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">10 * 9 * (4/3)</gadget>
<output>120</output>

<result>120</result>