Alright, let's work through 72389325 times 73982638 step by step
72389325 × 73982638 = 73982638 × (72389325)
+ 73982638 × 5 giving us 369913190
+ 73982638 × 20 that results in 1479652760
+ 73982638 × 300 giving us 22194791400
+ 73982638 × 9000 which equals 665843742000
+ 73982638 × 80000 producing 5918611040000
+ 73982638 × 300000 that is equal 22194791400000
+ 73982638 × 2000000 producing 147965276000000
+ 73982638 × 70000000 producing 5178784660000000

= 5355553226539350
