A pile of coal weighs 45 tons, and it takes 10 hours for a truck to transport it. Then, how many hours will it take to complete the task ((())/(())) in 4 hours, and (3/5) to complete the task.
一堆煤重45吨，一辆卡车要10小时才能运完，那么，4小时完成任务的((())/(()))，完成任务的(3/5)要多少小时．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/5) / (1/10)</gadget>
<output>6</output>

<result>6</result>