Alright, let's work through 3667 times 680 step by step
3667 × 680 = 680 × (3667)
+ 680 × 7 yielding 4760
+ 680 × 60 giving us 40800
+ 680 × 600 which equals 408000
+ 680 × 3000 giving us 2040000

= 2493560
