Alright, let's work through 23478144 times 72338513 step by step
23478144 × 72338513 = 72338513 × (23478144)
+ 72338513 × 4 which equals 289354052
+ 72338513 × 40 what gives us 2893540520
+ 72338513 × 100 yielding 7233851300
+ 72338513 × 8000 resulting in 578708104000
+ 72338513 × 70000 that results in 5063695910000
+ 72338513 × 400000 which equals 28935405200000
+ 72338513 × 3000000 that is equal 217015539000000
+ 72338513 × 20000000 producing 1446770260000000

= 1698374024959872
