It takes 12 hours for A and B to type a manuscript together. If A is allowed to type for 8 hours first, and then B is allowed to type for 14 hours, the task can be completed. How many hours does B need to type this manuscript alone?
甲、乙合打一份文稿要12小时完成，如果让甲先打8小时，再让乙打14小时就可以完成任务．乙单独打这份稿件要几个小时？
<gadget id="calculator">8 / 12</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">14 - 8</gadget>
<output>6</output>

<gadget id="calculator">(1/3) / 6</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">1 / (1/18)</gadget>
<output>18</output>

<result>18</result>