When employees of County Bank are summoned to serve on jury duty, the firm pays its workers the difference between their regular wages and the amount received for jury duty. One such employee has been receiving $365 per week. She just completed a five-day week of jury duty, for which she was paid $65 ($9 per day plus 20 cents per mile from her house to the courthouse, a 20-mile round trip). How much of the employee's earnings are subject to FICA tax?