Alright, let's work through 78778863 times 46473379 step by step
78778863 × 46473379 = 46473379 × (78778863)
+ 46473379 × 3 giving us 139420137
+ 46473379 × 60 that is equal 2788402740
+ 46473379 × 800 giving us 37178703200
+ 46473379 × 8000 what gives us 371787032000
+ 46473379 × 70000 that equals 3253136530000
+ 46473379 × 700000 that is equal 32531365300000
+ 46473379 × 8000000 producing 371787032000000
+ 46473379 × 70000000 giving us 3253136530000000

= 3661119957388077
