If a circle with a circumference of 18.84dm is equally divided into two semicircles, what is the circumference of each semicircle?
把一个周长为18.84dm的圆平均分成两个半圆，每个半圆的周长是多少
<gadget id="calculator">18.84 / 2</gadget>
<output>9.42</output>

<gadget id="calculator">18.84 / 3.14</gadget>
<output>6</output>

<gadget id="calculator">9.42 + 6</gadget>
<output>15.42</output>

<result>15.42</result>