A batch of goods is transported 3 times by one vehicle, and 54% of the total tonnage is transported away. After transporting 2 times at this speed, the remaining goods are 2.5 tons. How many tons are there in total?
一批货物，一辆车运3次，运走总吨数的54%，照这样的速度又运2次后，余下货物2.5吨，这批货物共多少吨？
<gadget id="calculator">54 / 100</gadget>
<output>27/50 = around 0.54</output>

<gadget id="calculator">(27/50) / 3</gadget>
<output>9/50 = around 0.18</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">(9/50) * 5</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">2.5 / (1/10)</gadget>
<output>25</output>

<result>25</result>