Alright, let's work through 5123 times 612 step by step
5123 × 612 = 612 × (5123)
+ 612 × 3 which equals 1836
+ 612 × 20 which equals 12240
+ 612 × 100 that is equal 61200
+ 612 × 5000 which equals 3060000

= 3135276
