A school playground is a square with a side length of about 100 meters. How many hectares is the area
一个学校的操场是一个边长约100米的正方形．面积约是多少公顷
<gadget id="calculator">100 * 100</gadget>
<output>10_000</output>

<gadget id="calculator">10_000 / 10_000</gadget>
<output>1</output>

<result>1</result>