A triangle has the same height as a parallelogram, and the base of the triangle is four times the base of the parallelogram. How many times is the area of the triangle equal to the area of the parallelogram?
一个三角形和一个平行四边形等高，这个三角形的底是平行四边形底的4倍．那么这个三角形的面积是平行四边形面积的多少倍．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 4</gadget>
<output>2</output>

<result>2</result>