Haimen is a national sanitary city with a population of 1.03 million. The per capita area of green land is 4 square meters. What is the total area of green land in Haimen?
海门是全国卫生城市，全市人口103万，人均占有绿地面积4平方米，海门绿地总面积是多少公顷．
<gadget id="calculator">10_000 / 10_000</gadget>
<output>1</output>

<gadget id="calculator">4 * 103 * 1</gadget>
<output>412</output>

<result>412</result>