batch of goods was originally planned to be shipped in 16 days, but actually it was cloudy with 5 tons per day, and it turned out to be shipped in 12 days. Q: How many tons is this batch of goods originally?
有一批货物，原计划16天运完，实际每天多云5吨，结果12天就运完了．问：这批货物原有多少吨？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">16 - 12</gadget>
<output>4</output>

<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">15 * 16</gadget>
<output>240</output>

<result>240</result>