Alright, let's work through 7042 times 503 step by step
7042 × 503 = 503 × (7042)
+ 503 × 2 that equals 1006
+ 503 × 40 that equals 20120
+ 503 × 000 which equals 0
+ 503 × 7000 producing 3521000

= 3542126
