A cylindrical can, the height measured from the inside is 8cm, and the radius of the bottom is 5cm, what is the volume of this can in milliliters?
一个圆柱形易拉罐，从里面量高是8cm，底面半径5cm，这个易拉罐的容积是多少毫升？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 8</gadget>
<output>628</output>

<result>628</result>