batch of goods is transported by car, (1/3) of the total number is transported for the first time, (1/4) of the total number is transported for the second time, 75 tons are transported for the third time, and 15 tons are left. How many tons are there?
用汽车运一批货物，第一次运走总数的(1/3)，第二次运走总数的(1/4)，第三次运走75吨，还剩下15吨，这批货物共有多少吨？
<gadget id="calculator">75 + 15</gadget>
<output>90</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">90 / (5/12)</gadget>
<output>216</output>

<result>216</result>