Alright, let's work through 6406396 times 38761215 step by step
6406396 × 38761215 = 38761215 × (6406396)
+ 38761215 × 6 giving us 232567290
+ 38761215 × 90 what gives us 3488509350
+ 38761215 × 300 that equals 11628364500
+ 38761215 × 6000 what gives us 232567290000
+ 38761215 × 00000 that equals 0
+ 38761215 × 400000 yielding 15504486000000
+ 38761215 × 6000000 that is equal 232567290000000

= 248319692731140
