No problem, we've got 51664519 and 72490939 to multiply
51664519 × 72490939 = 72490939 × (51664519)
+ 72490939 × 9 that results in 652418451
+ 72490939 × 10 what gives us 724909390
+ 72490939 × 500 which equals 36245469500
+ 72490939 × 4000 that equals 289963756000
+ 72490939 × 60000 giving us 4349456340000
+ 72490939 × 600000 what gives us 43494563400000
+ 72490939 × 1000000 resulting in 72490939000000
+ 72490939 × 50000000 resulting in 3624546950000000

= 3745209495293341
