batch of goods, its (1/3) was transported away for the first time, and its (4/9) was transported away for the second time. At this time, there are still 36 tons left. How many tons are there in this batch of goods?
一批货物，第一次运走它的(1/3)，第二次运走它的(4/9)，这时还剩36吨，这批货物原来有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (1/3) - (4/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">36 / (2/9)</gadget>
<output>162</output>

<result>162</result>