The two side lengths of an isosceles triangle are (1/4) decimeter and (3/5) decimeter. What is the perimeter of this isosceles triangle?
一个等腰三角形的两条边长是(1/4)分米和(3/5)分米，这个等腰三角形的周长是多少分米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) * 2</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/4) + (6/5)</gadget>
<output>29/20 = around 1.45</output>

<result>29/20 = around 1.45</result>