A 8-acre piece of land is subdivided into 4/7-acre lots. How many lots are there?

Pls! does anybody know a shortcut for answering these types of questions in the future?

When rolling 26 sided number cube what are the chances some of the role will be seven

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?