Liu Bin cut a 1-meter-long rubber band into three sections. The first section is (1/9) meter long and (3/9) meter shorter than the second section. How many meters is the length of the third rubber band?
刘斌把一条1米长的橡皮筋剪成3段．第一段长(1/9)米，比第二段少(3/9)米．第三段橡皮筋长多少米？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/9) + (1/3)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">1 - (1/9) - (4/9)</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>