Alright, let's work through 18442559 times 72665545 step by step
18442559 × 72665545 = 72665545 × (18442559)
+ 72665545 × 9 yielding 653989905
+ 72665545 × 50 that is equal 3633277250
+ 72665545 × 500 producing 36332772500
+ 72665545 × 2000 which equals 145331090000
+ 72665545 × 40000 that equals 2906621800000
+ 72665545 × 400000 yielding 29066218000000
+ 72665545 × 8000000 that equals 581324360000000
+ 72665545 × 10000000 producing 726655450000000

= 1340138600929655
