There are two bags of candy, one bag is 84 pieces, the other bag is 20 pieces, take 8 pieces from the bigger bag and put them into the smaller bag each time, how many times can the two bags have the same amount of sugar?
有两袋糖，一袋是84粒，另一袋是20粒，每次从多的一袋取出8粒放到少的一袋里去，拿多少次才能使两袋糖同样多？
<gadget id="calculator">84 - 20</gadget>
<output>64</output>

<gadget id="calculator">64 / 2 / 8</gadget>
<output>4</output>

<result>4</result>