If both sides of an isosceles right triangle are 5 cm, what is the area of the triangle?
一个等腰直角三角形两条直角边都是5厘米，这个三角形的面积是多少平方厘米．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 * (5/2)</gadget>
<output>25/2 = around 12.5</output>

<result>25/2 = around 12.5</result>