A batch of goods has already shipped (7/9) of the total number, and the rest will be shipped in 2 days. What fraction of this batch of goods needs to be shipped on average every day?
一批货物，已经运走了总数的(7/9)，余下的要2天运完，平均每天要运这批货物的几分之几？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(2/9) / 2</gadget>
<output>1/9 = around 0.111111</output>

<result>1/9 = around 0.111111</result>