My mother bought a basket of oranges and ate half of the oranges in the basket every day. After eating for 3 days, there were still 3 oranges left. How much did my mother buy?
妈妈买了一篮橘子，每天吃掉篮中橘子的一半，吃了3天后，还剩下3个橘子．妈妈买了多少．
<gadget id="calculator">3 * 2 * 2 * 2</gadget>
<output>24</output>

<result>24</result>