Zhang Huan surrounded a trapezoid with a 1-meter-long wire. The lengths of the three sides of the trapezoid are (3/8) meters, (1/8) meters, and (1/4) meters. How many meters is the other side? What trapezoid is this?
张欢用一根1米长的电线围了一个梯形，梯形三边的长分别是(3/8)米，(1/8)米和(1/4)米，另一边是多少米？这是一个什么梯形？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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

<gadget id="calculator">(3/8) + (1/8) + (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>