No problem, we've got 72169672 and 39818788 to multiply
72169672 × 39818788 = 39818788 × (72169672)
+ 39818788 × 2 which equals 79637576
+ 39818788 × 70 resulting in 2787315160
+ 39818788 × 600 what gives us 23891272800
+ 39818788 × 9000 that results in 358369092000
+ 39818788 × 60000 yielding 2389127280000
+ 39818788 × 100000 which equals 3981878800000
+ 39818788 × 2000000 yielding 79637576000000
+ 39818788 × 70000000 that results in 2787315160000000

= 2873708869397536
