The area of a right triangle is 15.5 square centimeters, the base is 5 centimeters, and what is the height.
直角三角形的面积是15.5平方厘米，底是5厘米，高是多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15.5 * (2/5)</gadget>
<output>6.2</output>

<result>6.2</result>