There is a 14 cm long plastic board, which is nailed by two plastic boards of the same length. The length of the overlapping part nailed together in the middle is 2 cm. How many centimeters is the length of a plastic board?
有一块14厘米长的塑料板，是由两块一样长的塑料板钉成的，中间钉在一起重叠的部分长2厘米，一块塑料板长多少厘米．
<gadget id="calculator">14 + 2</gadget>
<output>16</output>

<gadget id="calculator">16 / 2</gadget>
<output>8</output>

<result>8</result>