A circular piece of paper with a circumference of 6.28 decimeters is cut into two semicircles along its diameter. What is the circumference of each semicircle in decimeters?
一个周长是6.28分米的圆形纸片，沿直径剪成两个半圆，每个半圆的周长是多少分米．
<gadget id="calculator">6.28 / 3.14</gadget>
<output>2</output>

<gadget id="calculator">6.28 / 2</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 + 2</gadget>
<output>5.14</output>

<result>5.14</result>