Alright, let's work through 3523 times 860 step by step
3523 × 860 = 860 × (3523)
+ 860 × 3 what gives us 2580
+ 860 × 20 that equals 17200
+ 860 × 500 which equals 430000
+ 860 × 3000 what gives us 2580000

= 3029780
