Alright, let's work through 1440 times 2890 step by step
1440 × 2890 = 2890 × (1440)
+ 2890 × 0 which equals 0
+ 2890 × 40 that is equal 115600
+ 2890 × 400 which equals 1156000
+ 2890 × 1000 that equals 2890000

= 4161600
