There are 10 points on a circle, and every 4 vertices draw a quadrilateral, how many different quadrilaterals can be drawn in total?
在一个圆周上有10个点，以每4个顶点画一个四边形，一共可以画多少个不同的四边形？
<gadget id="calculator">10 * 9 * 8 * 7</gadget>
<output>5_040</output>

<gadget id="calculator">4 * 3 * 2 * 1</gadget>
<output>24</output>

<gadget id="calculator">5_040 / 24</gadget>
<output>210</output>

<result>210</result>