If the base of a parallelogram is expanded to the original 9 digits, and the height is reduced to the original (1/3), its area is just that much.
一个平行四边形的底扩大为原来的9位，高缩小为原来的(1/3)，它的面积就多少．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<result>3</result>