What is the area of a triangle whose base is 8 decimeters and whose height is 7 decimeters?
一个三角形底是8分米，高是7分米，它的面积是多少．
<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">8 * (7/2)</gadget>
<output>28</output>

<result>28</result>