There is a trapezoidal flower bed in the park, planted with 300 Chinese roses. The ground is 15 meters high, the bottom is 10 meters high, and the height is 12 meters. How many square meters does each flower occupy?
公园里有块梯形花坛，种植月季花300株，这块地上底是15米，下底是10米，高是12米，每株花占地多少平方米？
<gadget id="calculator">15 + 10</gadget>
<output>25</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">25 * 6</gadget>
<output>150</output>

<gadget id="calculator">150 / 300</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>