Alright, let's work through 78344619 times 49865664 step by step
78344619 × 49865664 = 49865664 × (78344619)
+ 49865664 × 9 that results in 448790976
+ 49865664 × 10 that results in 498656640
+ 49865664 × 600 that equals 29919398400
+ 49865664 × 4000 resulting in 199462656000
+ 49865664 × 40000 resulting in 1994626560000
+ 49865664 × 300000 giving us 14959699200000
+ 49865664 × 8000000 that is equal 398925312000000
+ 49865664 × 70000000 producing 3490596480000000

= 3906706447262016
