There are piles of goods, 20% of all the goods are transported for the first time, 35 tons are transported for the second time, and 2/3 of the first time is transported for the third time, which means there are 9 tons left. How many tons?
有堆货物，第一次运走全部的20%，第二次运走35吨，第三次运的是第一次的(2/3)，这是还剩9吨，这堆货物原有多少吨？
<gadget id="calculator">35 + 9</gadget>
<output>44</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/5) * (2/3)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 - (1/5) - (2/15)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">44 / (2/3)</gadget>
<output>66</output>

<result>66</result>