A certain convoy transports a batch of goods in two days, the goods transported on the first day are 1.5 tons less than the total (2/5), and the goods transported on the second day are 4.5 tons more than the remaining 60%. How many tons is this shipment?
某车队两天运完一批货物，第一天运的货物比全部的(2/5)少1.5吨，第二天运的比余下的60%多4.5吨．这批货物有多少吨？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1.5 * (3/5)</gadget>
<output>0.9</output>

<gadget id="calculator">4.5 - 1.5</gadget>
<output>3</output>

<gadget id="calculator">0.9 + 3</gadget>
<output>3.9</output>

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

<gadget id="calculator">(2/5) * (3/5)</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">(6/25) - (2/5) - (3/5)</gadget>
<output>-19/25 = around -0.76</output>

<gadget id="calculator">1 + (-19/25)</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">3.9 / (6/25)</gadget>
<output>16.25</output>

<result>16.25</result>