The base of a triangle is 28 meters long and 4 times its height. What is the area of this triangle in square meters?
一个三角形的底边长28米，是高的4倍．这个三角形的面积是多少平方米？
<gadget id="calculator">28 / 4</gadget>
<output>7</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">28 * (7/2)</gadget>
<output>98</output>

<result>98</result>