The stone factory has to transport 375 pieces of stone to the bridge construction site. The weight of each stone is 560 kg. The stone factory arranges a truck with a load of 10 tons to transport these stones. How many round trips does the truck need at least?
石料厂要往桥梁建筑工地运送375块石料，每块石料的质量是560千克，石料厂安排一辆载重10吨的卡车运送这些石料，则这辆卡车至少需往返多少趟．
<gadget id="calculator">560 / 1_000 / 10</gadget>
<output>7/125 = around 0.056</output>

<gadget id="calculator">375 * (7/125) * 2</gadget>
<output>42</output>

<result>42</result>