After Xiao Ming wraps a rope 400 cm long around the tabletop, there is still 86 cm left. What is the circumference of the tabletop in cm?
小明用一根长400厘米的绳子在桌面周围绕了一圈后，还剩下86厘米，桌面的周长是多少厘米？
<gadget id="calculator">400 - 86</gadget>
<output>314</output>

<result>314</result>