Alright, let's work through 7129 times 1503 step by step
7129 × 1503 = 1503 × (7129)
+ 1503 × 9 yielding 13527
+ 1503 × 20 what gives us 30060
+ 1503 × 100 what gives us 150300
+ 1503 × 7000 which equals 10521000

= 10714887
