The master and apprentice work together to make a batch of parts, and when the work is completed, the master completes (5/9) of this batch of parts. What fraction of this batch of parts does the master make more than the apprentice?
师徒两人合做一批零件，完工时师傅完成了这批零件的(5/9)．师傅比徒弟多做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">1 - (5/9)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

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