For a pile of chemical fertilizers, 120 tons were transported on the first day, accounting for exactly (2/5) of this pile of chemical fertilizers. How many tons to go?
一堆化肥，第一天运走120吨，正好占这堆化肥的(2/5)，第二天运走的吨数与这堆化肥总吨数的比是1﹕5，第二天运走多少吨？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 / (2/5)</gadget>
<output>300</output>

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

<gadget id="calculator">300 * (1/5)</gadget>
<output>60</output>

<result>60</result>