21,000*5%*1 and three fourths of a year

21,000 * 0.05 * 1.75

http://www.google.com/#sclient=psy&hl=en&q=21%2C000+*+0.05+*+1.75&aq=f&aqi=&aql=&oq=&gs_rfai=&pbx=1&fp=c9f200e8d6433b2a