A square orchard covers an area of 1 hectare. If the side length is increased by 100 meters, what is the area of the orchard?
一个正方形果园占地1公顷，如果把边长增加100米，果园的面积变为多少公顷？
<gadget id="calculator">100 + 100</gadget>
<output>200</output>

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

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

<gadget id="calculator">200 * (1/50)</gadget>
<output>4</output>

<result>4</result>