batch of goods was shipped, 240 tons were shipped on the first day, and (2/5) of the goods were shipped on the second day, and 15 tons were left undelivered. How many tons are there in total for this batch of goods?
运一批货物，第一天运了240吨，第二天运了这批货物的(2/5)，还剩15吨没有运，这批货物共有多少吨？
<gadget id="calculator">240 + 15</gadget>
<output>255</output>

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

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">255 / (3/5)</gadget>
<output>425</output>

<result>425</result>