The base of a triangle is enlarged to 4 times its original size, its height is reduced to half its original size, and its area is enlarged by how many times its original size
一个三角形的底扩大为原来的4倍，高缩小到原来的一半，面积扩大为原来的多少倍
<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>