Alright, let's work through 72973728 times 49790129 step by step
72973728 × 49790129 = 49790129 × (72973728)
+ 49790129 × 8 resulting in 398321032
+ 49790129 × 20 yielding 995802580
+ 49790129 × 700 resulting in 34853090300
+ 49790129 × 3000 that equals 149370387000
+ 49790129 × 70000 giving us 3485309030000
+ 49790129 × 900000 producing 44811116100000
+ 49790129 × 2000000 which equals 99580258000000
+ 49790129 × 70000000 which equals 3485309030000000

= 3633371330730912
