A park covers an area of about 4 hectares, how many parks cover an area of about 1 square kilometer.
某公园的占地面积约4公顷，多少个公园的占地面积约是1平方千米．
<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">1 * 25</gadget>
<output>25</output>

<result>25</result>