If the base of the parallelogram is 8 cm and the height is 2 decimeters, what is its area in square centimeters?
平行四边形的底是8厘米，高2分米，它的面积是多少平方厘米．
<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">8 * 20</gadget>
<output>160</output>

<result>160</result>