589*205-72000:900*(420010-391956):160+308*804

Assuming colon (:) means division, evaluated left-to-right:

• 589 × 205 = 120,745
• 420010 − 391956 = 28,054
• 72,000 ÷ 900 = 80; (80 × 28,054) ÷ 160 = 2,244,320 ÷ 160 = 14,027
• 308 × 804 = 247,632

Total: 120,745 − 14,027 + 247,632 = 354,350

Answer: 354350