Answer:
80,000 tickets.
Hey!
To solve this problem, you really just need to divide 5,000,000 by 62.5 to find the amount of tickets.
However, if this doesn't work for you, you can always simply try and solve for x.
62.5*x=5,000,000
*10 on both sides
Divide by 625 on both sides.
Therefore, X=80,000, or 80,000 tickets will need to be sold.
I hope this helped!