A rectangular square is 300 meters long and 100 meters wider than it is wide. How many hectares does this square occupy?
一个长方形广场，长300米，比宽多100米．这个广场占地多少公顷？
<gadget id="calculator">300 - 100</gadget>
<output>200</output>

<gadget id="calculator">200 / 10_000</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">300 * (1/50)</gadget>
<output>6</output>

<result>6</result>