The elder sister and the younger brother originally had the same number of lucky stars, the elder sister made 120 more, and the younger brother gave 80 stars to his classmates, the older sister's lucky stars were five times that of the younger brother, how many lucky stars did they have in common?
姐姐和弟弟原来有同样数量的幸运星，姐姐又做了120颗，弟弟送给同学80颗后，姐姐的幸运星是弟弟的5倍，原来他们两人共有多少颗幸运星？
<gadget id="calculator">120 + 80</gadget>
<output>200</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">50 + 80</gadget>
<output>130</output>

<gadget id="calculator">130 * 2</gadget>
<output>260</output>

<result>260</result>