The hospital built two cylindrical flower beds of the same size. The inner diameter of the bottom of the flower bed is 3 meters and the height is 0.6 meters. If the height of the filling soil inside is 0.5 meters, how many cubic meters of filling soil are needed for the two flower beds?
医院建了两个同样大小的圆柱形花坛．花坛的底面内直径为3米，高为0.6米．如果里面填土的高度是0.5米，两个花坛中共需要填土多少方？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) ** 2</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">3.14 * (9/4) * 0.5 * 2</gadget>
<output>7.065</output>

<result>7.065</result>