No problem, we've got 72759673 and 21542768 to multiply
72759673 × 21542768 = 21542768 × (72759673)
+ 21542768 × 3 which equals 64628304
+ 21542768 × 70 what gives us 1507993760
+ 21542768 × 600 that results in 12925660800
+ 21542768 × 9000 yielding 193884912000
+ 21542768 × 50000 yielding 1077138400000
+ 21542768 × 700000 which equals 15079937600000
+ 21542768 × 2000000 producing 43085536000000
+ 21542768 × 70000000 resulting in 1507993760000000

= 1567444755194864
