There is a batch of goods, (1/4) of which was shipped on the first day, and (3/5) of the first day were shipped on the second day, and there are still 90 tons that have not been shipped. How many tons is this shipment?
有一批货物，第一天运了这批货物的(1/4)，第二天运的是第一天的(3/5)，还剩90吨没有运．这批货物有多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(1/4) * (3/5)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (1/4) - (3/20)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">90 / (3/5)</gadget>
<output>150</output>

<result>150</result>