Mom went to the supermarket to buy daily necessities, half of the money she brought was used to buy a set of dishes, 4 yuan was used to buy a toothbrush, and half of the remaining money was used to buy shampoo. At this time, there was still 16 yuan left. How much did you bring?
妈妈到超市买日用品，买一套餐盘用去所带钱的一半，买牙刷用去了4元钱，买洗发水用去了剩下钱的一半，这时还剩下16元钱，妈妈一共带了多少钱？
<gadget id="calculator">16 * 2</gadget>
<output>32</output>

<gadget id="calculator">32 + 4</gadget>
<output>36</output>

<gadget id="calculator">36 * 2</gadget>
<output>72</output>

<result>72</result>