There is a cylindrical style on the Civic Square, with a base radius of 0.5 meters and a height of 3.5 meters. The sides and top of the style are decorated with flowers. If 40 flowers are used per square meter, how many flowers will be used to decorate this style column?
市民广场上有一个圆柱形的花柱，底而半径0.5米，高3.5米，花柱的侧面和顶面都用鲜花装饰．如果每平方米要用40朵花，装饰这根花柱要用多少朵鲜花？
<gadget id="calculator">2 * 3.14 * 0.5 * 3.5</gadget>
<output>10.99</output>

<gadget id="calculator">0.5 ** 2</gadget>
<output>0.25</output>

<gadget id="calculator">3.14 * 0.25</gadget>
<output>0.785</output>

<gadget id="calculator">10.99 + 0.785</gadget>
<output>11.775</output>

<gadget id="calculator">11.775 * 40</gadget>
<output>471</output>

<result>471</result>