A rope is (1/3) meter long, divided into 3 small sections, the length of the first small section is (1/4) of the total length, the ratio of the length of the second small section to the total length of the first two sections is 1:2, the second What is the length in meters.
一根绳子长(1/3)米，分成3小段，第一小段的长度是总长度的(1/4)，第二小段的长度与前两段总长度的比是1：2，第二小段长度是多少米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">(1/3) * (1/3)</gadget>
<output>1/9 = around 0.111111</output>

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