A pile of coal is transported away (2/5) for the first time, which is exactly 60 tons, and 20% of the whole is transported away for the second time. How many tons were transported the second time?
一堆煤，第一次运走(2/5)，正好是60吨，第二次又运走全部的20%．第二次运走多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">60 / (2/5)</gadget>
<output>150</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">150 * (1/5)</gadget>
<output>30</output>

<result>30</result>