(90+510/30)*(80/4*5)

(90 + 510/30) * (80/4 * 5) = 10 700 1) 510 : 30 = 17 2) 90 + 17 = 107 3) 80 : 4 = 20 4) 20 * 5 = 100 5) 107 * 100 = 10 700