Estimate. Then find the difference 456,912 -37,800

Ineed asap.i cant understand this question i need someone to me right away

Answer this question i need as soon as possible

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?