Answer:
2,160
Step-by-step explanation:
598 + 20 = 618
618 + 987 = 1,605
1,605 + 78 = 1,683
1,683 + 90 = 1,773
1,773 + 87 = 1,860
1,860 + 80 = 1,940
1,940 + 60 = 2,000
2000 + 70 = 2,070
2070 + 90 = 2,160
