Grandpa cut a 1 meter long rope into three sections, the first section is (1/8) meter long, the second section is (2/8) meter long, how many meters is the third section long?
爷爷把一根1米长的绳子剪成三段，第一段长(1/8)米，第二段长(2/8)米，第三段长多少米？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/8) - (1/4)</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>