What is the area of a triangle with a base of 6 decimeters and a height of 30 centimeters?
一个三角形，底为6分米，高为30厘米，它的面积是多少．
<gadget id="calculator">30 / 10 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">6 * (3/2)</gadget>
<output>9</output>

<result>9</result>