400 + 900 + 1000 = 2300
The answer is 18,785,024
400 + 1000 = 1400
900 + 100 = 1000
1000 + 400 - 300 = 1100
600 + 400 = 1000
900
400 + 500 = 900
900
To estimate a number you round it up to easier number so 387 would be 400. 945 would be 950 and 1024 would be 1030. so 400 and 950 would be 1350 plus 1030 equals 2380 you could even round it up easier so 400 plus 900 and 1000 equals 2300
900
It is 1931
900