If the base of a triangle is doubled and the height is quadrupled, how many times will the area be enlarged?
把一个三角形底扩大到原来的2倍，高扩大到原来的4倍，面积会扩大到原来的多少倍．
<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<result>8</result>