When Belle's parents are away celebrating their anniversary, she gets to sleepover for a week at her grandparents' house. Afterwards, Belle decides to make her grandparents a photo album of their time together. There are 8 pages in the album. Belle puts the same number of photos on each page, for a total of 72 photos. Which equation can you use to find the number of photos p on each page? Solve this equation for p to find the number of photos on each page.