Alright, let's work through 7131 times 4002 step by step
7131 × 4002 = 4002 × (7131)
+ 4002 × 1 which equals 4002
+ 4002 × 30 producing 120060
+ 4002 × 100 that is equal 400200
+ 4002 × 7000 yielding 28014000

= 28538262
