Alright, let's work through 5149 times 7902 step by step
5149 × 7902 = 7902 × (5149)
+ 7902 × 9 yielding 71118
+ 7902 × 40 that is equal 316080
+ 7902 × 100 producing 790200
+ 7902 × 5000 which equals 39510000

= 40687398
