Alright, let's work through 2783 times 7698 step by step
2783 × 7698 = 7698 × (2783)
+ 7698 × 3 what gives us 23094
+ 7698 × 80 producing 615840
+ 7698 × 700 what gives us 5388600
+ 7698 × 2000 what gives us 15396000

= 21423534
