25% of a batch of goods was transported on the first day, and (2/5) on the second day, leaving 60 tons undelivered. How many tons of this batch of goods are in total?
一批货物，第一天运走了25%，第二天运走了(2/5)，还剩60吨没运走，这批货物共多少吨？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">60 / (7/20)</gadget>
<output>1_200/7 = around 171.428571</output>

<result>1_200/7 = around 171.428571</result>