There is a bag of flour, half of which is eaten each time, after eating 3 times, there is still 12 kilograms left, how many kilograms of this bag of flour is there?
有袋面粉，每次都吃掉里面的一半，吃了3次，还剩12千克，这袋面粉原有多少千克．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">12 / (1/2) / (1/2) / (1/2)</gadget>
<output>96</output>

<result>96</result>