Alright, let's work through 81313414 times 74378173 step by step
81313414 × 74378173 = 74378173 × (81313414)
+ 74378173 × 4 producing 297512692
+ 74378173 × 10 which equals 743781730
+ 74378173 × 400 yielding 29751269200
+ 74378173 × 3000 producing 223134519000
+ 74378173 × 10000 that equals 743781730000
+ 74378173 × 300000 yielding 22313451900000
+ 74378173 × 1000000 that results in 74378173000000
+ 74378173 × 80000000 that equals 5950253840000000

= 6047943173712622
