For a batch of goods, (2/9) of it was transported for the first time, and (5/9) of it was transported for the second time, what fraction of the cargo was transported in total for the two times? What fraction is left?
一批货物，第一次运走了它的(2/9)，第二次运走了它的(5/9)，两次共运走了这堆货物的几分之几？还剩几分之几？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 - (2/9) - (5/9)</gadget>
<output>2/9 = around 0.222222</output>

<result>2/9 = around 0.222222</result>