A cuboid has a base area of 20cm**2 and a height of 2.8m, what is its volume?
一个长方体底面积是20cm**2，高是2.8m，它的体积是多少．
<gadget id="calculator">2.8 * 100</gadget>
<output>280</output>

<gadget id="calculator">20 * 280</gadget>
<output>5_600</output>

<result>5_600</result>