There is a square handkerchief whose side length is (1/4) meter. What is the circumference of this square handkerchief?
有一块正方形的手帕，边长是(1/4)米．这块正方形手帕的周长是多少米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<result>1</result>