Alright, let's work through 47890375 times 80686316 step by step
47890375 × 80686316 = 80686316 × (47890375)
+ 80686316 × 5 what gives us 403431580
+ 80686316 × 70 producing 5648042120
+ 80686316 × 300 that results in 24205894800
+ 80686316 × 0000 that equals 0
+ 80686316 × 90000 producing 7261768440000
+ 80686316 × 800000 what gives us 64549052800000
+ 80686316 × 7000000 producing 564804212000000
+ 80686316 × 40000000 that equals 3227452640000000

= 3864097930608500
