A piece of right-angled triangle land, the lengths of the two right-angled sides are 36 meters and 20 meters respectively, what is the area of the land in square meters?
一块直角三角形的地，两条直角边的长分别是36米、20米，这块地的面积是多少平方米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 36 * 20</gadget>
<output>360</output>

<result>360</result>