The area of the triangle is 4.5 square meters, the height is 6 meters, and the base is x meters.
三角形的面积是4.5平方米，高是6米，底是x米．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">4.5 / 3</gadget>
<output>1.5</output>

<result>1.5</result>