Alright, let's work through 50185467 times 78831477 step by step
50185467 × 78831477 = 78831477 × (50185467)
+ 78831477 × 7 yielding 551820339
+ 78831477 × 60 producing 4729888620
+ 78831477 × 400 that results in 31532590800
+ 78831477 × 5000 resulting in 394157385000
+ 78831477 × 80000 that results in 6306518160000
+ 78831477 × 100000 that results in 7883147700000
+ 78831477 × 0000000 producing 0
+ 78831477 × 50000000 giving us 3941573850000000

= 3956194487544759
