Uncle Li bought a bottle of medicine, which contained 90 tablets. The label said: 2-3 tablets each time, 3 times a day, how many days should Uncle Li take this bottle of medicine at least.
李大爷买了一瓶药，其中有90片，标签上写道：每次2-3片，每日3次，这瓶药李大爷至少吃多少天．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">90 / 9</gadget>
<output>10</output>

<result>10</result>