A corporation's pension plan provides a lifetime annual income to its employees upon retirement at age $65.$ The plan provides $3\%$ for each year of service of the employee's salary upon retirement. Those who retire before $65$ have their benefit reduced by $1\mathrm{.}5\%$ for each year before $65$ that they retire.

Russ retires at age $60$ with $25$ years of service. If his salary upon retirement is $$70,411,$ what is his annual pension benefit