batch of goods, first transported 144 tons, and then transported away (3/5) of this batch of goods. At this time, the remaining goods are exactly (1/4) of the original batch of goods. How many tons of this batch of goods are there?
一批货物，先运走144吨，又运走这批货物的(3/5)，这时剩下的货物正好是原来这批货物的(1/4)，这批货物共有多少吨？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">144 / (3/20)</gadget>
<output>960</output>

<result>960</result>