The shape of a farm is approximately parallelogram. It is known that its base is 430 meters and its height is 230 meters. What is the area of this farm in hectares?
一个农场的形状近似于平行四边形．已知它的底是430米，高是230米，这个农场的面积是多少公顷？
<gadget id="calculator">430 * 230</gadget>
<output>98_900</output>

<gadget id="calculator">98_900 / 10_000</gadget>
<output>989/100 = around 9.89</output>

<result>989/100 = around 9.89</result>