The elder brother has 124 lychees, and the younger sister has 20 lychees. The elder brother wants the younger sister to have as many lychees as his own. Every time he takes 13 from his own basket and puts them in his sister's basket, how many times does the brother need to take them?
哥哥有124个荔枝，妹妹有20个荔枝，哥哥想让妹妹的荔枝和自己的一样多．他每次从自己的篮子里拿13个放到妹妹的篮子里，哥哥需要拿多少次？
<gadget id="calculator">124 + 20</gadget>
<output>144</output>

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

<gadget id="calculator">72 - 20</gadget>
<output>52</output>

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

<result>4</result>