Please answer a question about the following article about Saint Barth%C3%A9lemy:

Located approximately 250 kilometres (160 mi) east of Puerto Rico and the nearer Virgin Islands, St. Barthélemy lies immediately southeast of the islands of Saint Martin and Anguilla. It is one of the Renaissance Islands. St. Barthélemy is separated from Saint Martin by the Saint-Barthélemy Channel. It lies northeast of Saba and St Eustatius, and north of St Kitts. Some small satellite islets belong to St. Barthélemy including Île Chevreau (Île Bonhomme), Île Frégate, Île Toc Vers, Île Tortue and Gros Îlets (Îlots Syndare). A much bigger islet, Île Fourchue, lies on the north of the island, in the Saint-Barthélemy Channel. Other rocky islets which include Coco, the Roques (or little Turtle rocks), the Goat, and the Sugarloaf.

How many Miles East of Puerto Rico is St. Barts?
160