Benjamin retired at age 62 and began to collect Social Security retirement benefits. After a year of playing 3 rounds of golf per day, Ben is bored and decides to go back to work part-time. In 2015 (when Benjamin is age 63) he earns $25,720 at his part time job. His social security benefit before any adjustments for 2015 is $18,000. What will his actual Social Security benefit be for 2015