The circumference of a circular piece of paper is 314 cm. Cut the circle into two equal semicircles along the diameter. What is the circumference of a semicircle of paper?
一个圆形纸片的周长是314厘米，把这个圆沿着直径剪成两个相等的半圆形，一个半圆形纸片的周长是多少厘米
<gadget id="calculator">314 / 2</gadget>
<output>157</output>

<gadget id="calculator">314 / 3.14</gadget>
<output>100</output>

<gadget id="calculator">157 + 100</gadget>
<output>257</output>

<result>257</result>