There are 10 circular concrete pillars at the entrance of Shengli Cinema, with a circumference of 6.28 meters and a height of 8 meters. Now it is necessary to cover all the surfaces of these pillars with advertising posters. The cost per square meter of advertising space is 2.50 yuan. How much should be prepared at least?
胜利电影院门口有10根圆形水泥柱，底面周长6.28米，高8米．现要将这些柱子表面全部蒙上广告宣传画，广告版面每平方米成本需2.50元，至少应准备多少元的经费？
<gadget id="calculator">6.28 * 8</gadget>
<output>50.24</output>

<gadget id="calculator">50.24 * 10</gadget>
<output>502.4</output>

<gadget id="calculator">502.4 * 2.5</gadget>
<output>1_256</output>

<result>1_256</result>