Alright, let's work through 7139 times 2522 step by step
7139 × 2522 = 2522 × (7139)
+ 2522 × 9 that results in 22698
+ 2522 × 30 that results in 75660
+ 2522 × 100 that results in 252200
+ 2522 × 7000 yielding 17654000

= 18004558
