There is a rectangle whose width is (2/5) decimeters and length is (3/5) decimeters. What is the circumference in meters?
有一个长方形，已知宽是(2/5)分米，长是(3/5)分米，周长是多少米？
<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>