The "Water Cube" covers an area of about 8 hectares, and several "Water Cubes" cover an area of about 10 square kilometers.
"水立方"的占地面积约为8公顷，多少个"水立方"的占地面积约为10平方千米．
<gadget id="calculator">100 / 8</gadget>
<output>25/2 = around 12.5</output>

<gadget id="calculator">10 * (25/2)</gadget>
<output>125</output>

<result>125</result>