(659 874-650 094)*45/50+404 401*2 =
(659874-650094) *45/50 + 404401 *2=817604 1) 659874-650094=9780 2) 9780 * 45/50 = (9780*45) / (1*50) = (978*9) / (1*1) = 8802 3) 404401*2 = 808802 4) 8802+ 808802= 817604