Worker Uncle Wang processed a batch of parts (5/9) in two days, among which (2/9) of this batch of parts was processed on the first day, so what fraction of this batch of parts was processed on the second day?
工人王叔叔两天加工了一批零件的(5/9)，其中第一天加工了这批零件的(2/9)，那么第二天加工了这批零件的几分之几？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(5/9) - (2/9)</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>