Xiaohong and her parents, and Xiaoyu and her parents, a total of 6 people went on an outing on weekends, and the one-way fare was 32.5 yuan per person. How much is the round-trip transportation between the two of them? (Children's tickets are half price, Xiaohong and Xiaoyu can both buy children's tickets)
小红和父母以及小宇和父母两家共6个人在周末一起去郊游，单程票价每人32.5元．他们两家往返交通费共要多少钱？(儿童票是半价，小红和小宇都可以买儿童票)
<gadget id="calculator">32.5 * 5 * 2</gadget>
<output>325</output>

<result>325</result>