A copper wire with a length of 3 meters is used for the first time (1/3), and the remaining (1/2) is used for the second time. What is the remaining length of the wire?
一根长3米的铜线，第一次用去(1/3)，第二次用去余下的(1/2)，还剩下全长的多少
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

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

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

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