A certain warehouse needs to ship out a batch of goods, and the goods are shipped out in two days, and 30% of all goods are shipped out on the first day, which is 240 tons less than that on the second day. How many tons is this shipment in total?
某仓库要运出一批货物，分两天运完，第一天运出全部的30%，比第二天少运240吨．这批货物一共多少吨？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10) - (3/10)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">240 / (2/5)</gadget>
<output>600</output>

<result>600</result>