What's the controversial spanish tradition that's practiced in several latin american countries?

Mary just sent out invitations to her wedding last week the invitations were so heavy that she put more than just one stamp on each envelope she used 255 stamps and mailed out 85 invitations and see you as an equal amount of stamps on each envelope

Ithink this is wrong. someone check this . i retook this and it said i was wrong i think. also this is not an exam since is deleting “dishonest” pictures. it’s homework. but i still want a correct answer pls.

Correct answer only ! anoche yo ) por ocho horas.