The Forbidden City in Beijing needs to repaint 12 large columns. The circumference of the bottom of the columns is 3.14 meters and the height is 6.5 meters. Calculated by calculating that 1 kilogram of paint can paint 5 square meters, how many kilograms of paint are needed to paint these large columns?
北京故宫要重新油漆12根大圆柱，圆柱底面周长为3.14米，高6.5米，按1千克油漆可漆5平方米计算，漆这些大圆柱要多少千克油漆？
<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">3.14 * 6.5 * (12/5)</gadget>
<output>48.984</output>

<result>48.984</result>