Beibei goes to the wise old man's house every 7 days, and Yaya goes to the wise old man's house every 5 days. Today the two went to Wisdom Elder's Home together, at least how many days later they will go to Wisdom Elder's Home on the same day again?
贝贝每7天去一次智慧老人家，丫丫每5天去一次智慧老人家．今天两人一起去了智慧老人家，至少多少天后两人会再一次同一天去智慧老人家？
<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<result>35</result>