Alright, let's work through 3293 times 156 step by step
3293 × 156 = 156 × (3293)
+ 156 × 3 that equals 468
+ 156 × 90 what gives us 14040
+ 156 × 200 that equals 31200
+ 156 × 3000 that equals 468000

= 513708
