There are 26 exercises in this new mathematics lesson. When the school started, Teacher Wang planned to finish the new content every week (1/15), and the National Day holiday and the Mid-Autumn Festival holiday were about 1 week away. So, according to the plan, in which week Mr. Wang will end the new class.
本期数学新课共有26个练习．开学时，王老师打算每周完成(1/15)的新内容，国庆假、中秋节放假约1个星期．那么，按计划王老师将在第多少周结束新课．
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / (1/15)</gadget>
<output>15</output>

<gadget id="calculator">15 + 1</gadget>
<output>16</output>

<result>16</result>