Alright, let's work through 7938 times 1603 step by step
7938 × 1603 = 1603 × (7938)
+ 1603 × 8 producing 12824
+ 1603 × 30 which equals 48090
+ 1603 × 900 producing 1442700
+ 1603 × 7000 producing 11221000

= 12724614
