Alright, let's work through 97512069 times 72151913 step by step
97512069 × 72151913 = 72151913 × (97512069)
+ 72151913 × 9 that equals 649367217
+ 72151913 × 60 what gives us 4329114780
+ 72151913 × 000 that equals 0
+ 72151913 × 2000 yielding 144303826000
+ 72151913 × 10000 that results in 721519130000
+ 72151913 × 500000 that results in 36075956500000
+ 72151913 × 7000000 giving us 505063391000000
+ 72151913 × 90000000 what gives us 6493672170000000

= 7035682318937997
