Alright, let's work through 6402344 times 74765094 step by step
6402344 × 74765094 = 74765094 × (6402344)
+ 74765094 × 4 what gives us 299060376
+ 74765094 × 40 what gives us 2990603760
+ 74765094 × 300 resulting in 22429528200
+ 74765094 × 2000 resulting in 149530188000
+ 74765094 × 00000 that results in 0
+ 74765094 × 400000 producing 29906037600000
+ 74765094 × 6000000 that equals 448590564000000

= 478671850980336
