Chen Qiang formed a triangle with a 1m long iron wire. One side of the triangle is (4/9)m and the other side is (1/3)m. How many meters is the third side?
陈强用一根1m长的铁丝围成了一个三角形，量得三角形的一边是(4/9)m，另一边是(1/3)m，第三条边长多少米？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

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

<gadget id="calculator">1 - (4/9) - (1/3)</gadget>
<output>2/9 = around 0.222222</output>

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