No problem, we've got 80369497 and 52127618 to multiply
80369497 × 52127618 = 52127618 × (80369497)
+ 52127618 × 7 that equals 364893326
+ 52127618 × 90 which equals 4691485620
+ 52127618 × 400 producing 20851047200
+ 52127618 × 9000 that equals 469148562000
+ 52127618 × 60000 what gives us 3127657080000
+ 52127618 × 300000 yielding 15638285400000
+ 52127618 × 0000000 which equals 0
+ 52127618 × 80000000 yielding 4170209440000000

= 4189470438468146
