No problem, we've got 71853396 and 72315557 to multiply
71853396 × 72315557 = 72315557 × (71853396)
+ 72315557 × 6 what gives us 433893342
+ 72315557 × 90 that equals 6508400130
+ 72315557 × 300 yielding 21694667100
+ 72315557 × 3000 which equals 216946671000
+ 72315557 × 50000 what gives us 3615777850000
+ 72315557 × 800000 producing 57852445600000
+ 72315557 × 1000000 resulting in 72315557000000
+ 72315557 × 70000000 which equals 5062088990000000

= 5196118354081572
