Alright, let's work through 3585 times 680 step by step
3585 × 680 = 680 × (3585)
+ 680 × 5 giving us 3400
+ 680 × 80 which equals 54400
+ 680 × 500 that results in 340000
+ 680 × 3000 that results in 2040000

= 2437800
