There is a right triangle, the lengths of the two sides are two different prime numbers, their sum is 14cm, what is the area of this right triangle?
有一个直角三角形，两条直角边的长度是两个不同的质数，它们的和是14cm，这个直角三角形的面积是多少？
<gadget id="calculator">11 / 2</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">3 * (11/2)</gadget>
<output>33/2 = around 16.5</output>

<result>33/2 = around 16.5</result>