961-(59+64)*7-160/2+43*20
1. 59 + 64 = 123 2. 123 * 7 = 861 3. 160/2 = 80 4. 43*20 = 860 5. 961 - 861 = 100 6. 100 - 80 = 20 7. 20 + 860 = 880