An isosceles right-angled triangle vegetable field, the right-angled side is 8 meters, what is the area of this vegetable field in square meters?
一块等腰直角三角形菜地，直角边为8米，这块菜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">8 * 8 * (1/2)</gadget>
<output>32</output>

<result>32</result>