A triangular piece of land is 120 meters high and 200 meters high, how many hectares does this piece of land have?
一块三角形地高120米，底是200米，这块地有多少公顷．
<gadget id="calculator">120 / 2 / 10_000</gadget>
<output>3/500 = around 0.006</output>

<gadget id="calculator">200 * (3/500)</gadget>
<output>6/5 = around 1.2</output>

<result>6/5 = around 1.2</result>