No problem, we've got 84028587 and 90479808 to multiply
84028587 × 90479808 = 90479808 × (84028587)
+ 90479808 × 7 yielding 633358656
+ 90479808 × 80 giving us 7238384640
+ 90479808 × 500 yielding 45239904000
+ 90479808 × 8000 resulting in 723838464000
+ 90479808 × 20000 resulting in 1809596160000
+ 90479808 × 000000 that results in 0
+ 90479808 × 4000000 giving us 361919232000000
+ 90479808 × 80000000 what gives us 7238384640000000

= 7602890418271296
