After a piece of iron wire forms a rectangle with a length of 8 cm and a width of 6 cm, there is 2 cm left. How long is this wire in centimeters?
一根铁丝，围成一个长8厘米，宽6厘米的长方形后，还剩2厘米．这根铁丝原来长多少厘米？
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

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

<gadget id="calculator">28 + 2</gadget>
<output>30</output>

<result>30</result>