There are 100 apples in a pile. On the first day, I ate all the apples (1/10), and in the next eight days, I ate (1/9), (1/8), and (1/10) of the remaining apples from the previous day. 7), (1/6), ..., (1/3), (1/2). After eating like this for nine days, how many are left unfinished?
有一堆苹果共100个，第一天了吃了全部苹果的(1/10)，以后八天里分别吃了前一天吃剩下的(1/9)、(1/8)、(1/7)、(1/6)、…、(1/3)、(1/2)．这样吃了九天后，还剩下几个没吃完？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">100 * (1/10)</gadget>
<output>10</output>

<result>10</result>