The area of a triangle is 4.5 square centimeters, the base is 5 centimeters, and the height is centimeters.
一个三角形的面积是4.5平方分米，底是5厘米，高是多少厘米．
<gadget id="calculator">4.5 * 100</gadget>
<output>450</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">450 * (2/5)</gadget>
<output>180</output>

<result>180</result>