There is a square field with a side length of 200 meters. If 4,000 sheep can be raised, how many sheep can be raised per hectare of grassland on average?
有一块正方形的草场，边长是200米．如果能养4000只羊，平均每公顷草地能养多少只羊？
<gadget id="calculator">200 / 10_000</gadget>
<output>1/50 = around 0.02</output>

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

<gadget id="calculator">4_000 / 4</gadget>
<output>1_000</output>

<result>1_000</result>