A parallelogram, the two adjacent sides are 8cm and 6cm long respectively, what is the perimeter of this parallelogram in cm?
一个平行四边形，相邻的两条边分别长8cm和6cm，这个平行四边形的周长是多少cm？
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>