During an important NATO exercise, an F-14 Tomcat left the carrier Nimitz on a course with a bearing of 42º and flew 325 miles. Then the F-14 flew for some distance on a course with a bearing of 151º. Finally, the plane flew back to its starting point on a course with a bearing of 315º. What distance did the plane fly on the final leg of the journey? (Bearing= degrees right of North)