The elder sister has 124 candies and the younger sister has 20 candies. The older sister wants her younger sister to have the same amount of candy as her own. She takes out 13 pieces of candy from her own bag and puts them in her younger sister's bag each time. How many times does the older sister need to take them?
姐姐有124块糖，妹妹有20块糖．姐姐想让妹妹的糖和自己的同样多，她每次从自己的袋子里拿出13块糖放到妹妹的袋子里，姐姐需要拿几次？
<gadget id="calculator">124 + 20</gadget>
<output>144</output>

<gadget id="calculator">144 / 2</gadget>
<output>72</output>

<gadget id="calculator">124 - 72</gadget>
<output>52</output>

<gadget id="calculator">52 / 13</gadget>
<output>4</output>

<result>4</result>