Uncle Niu wants to saw a piece of wood that is 6 meters long. Starting from one end, first saw a section of 12 cm, then saw a section of 8 cm, and saw alternately. If it takes 2 minutes to saw each section, and rest for 2 minutes after sawing a section. So, how many minutes does Uncle Niu need to finish sawing this piece of wood?
牛伯伯要锯一根长6米的木头．从一端开始，先12厘米锯一段，再8厘米锯一段，长短交替着锯．若每锯一段需要2分钟，且锯完一段休息2分钟．那么，牛伯伯要锯完这根木头需要多少分钟？
<gadget id="calculator">100 / 20</gadget>
<output>5</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">30 - 1 - 1</gadget>
<output>28</output>

<gadget id="calculator">30 + 28</gadget>
<output>58</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">58 * 4</gadget>
<output>232</output>

<gadget id="calculator">232 + 2</gadget>
<output>234</output>

<result>234</result>