The height of a triangle is 4.5 square meters, which is 5 times the length of the base. What is the area of the triangle?
一个三角形的高是4.5匣米，是底长度的5倍，这个三角形的面积是多少．
<gadget id="calculator">4.5 / 5</gadget>
<output>0.9</output>

<gadget id="calculator">4.5 / 2</gadget>
<output>2.25</output>

<gadget id="calculator">0.9 * 2.25</gadget>
<output>2.025</output>

<result>2.025</result>