Households A, B, and C share a bathroom, and the three households take turns to clean it equally. During the cleaning in September, A did not clean due to busy work, B cleaned for 18 days, and C cleaned for 12 days. At the end of the month, A takes out 100 yuan to replace his labor. If the money is distributed to B and C according to the number of days, how much should B get?
甲乙丙三家共用一个卫生间，卫生由三家轮流平均打扫．在九月份的打扫中，甲因工作忙没打扫，乙打扫了18天，丙打扫了12天．到月末甲拿出100元顶替他的劳动，如果这笔钱按天数分给乙、丙两家，那么乙应分得多少元？
<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">100 / 10</gadget>
<output>10</output>

<gadget id="calculator">18 - 10</gadget>
<output>8</output>

<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<result>80</result>