The length of a cuboid is (3/5) decimeters, the width is (1/8) decimeters, and the width is (11/40) decimeters. What is the sum of its edge lengths?
一个长方体的长是(3/5)分米，宽是(1/8)分米，宽是(11/40)分米，它的棱长和是多少分米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">11 / 40</gadget>
<output>11/40 = around 0.275</output>

<gadget id="calculator">(3/5) + (1/8) + (11/40)</gadget>
<output>1</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<result>4</result>