No problem, we've got 99554421 and 55555839 to multiply
99554421 × 55555839 = 55555839 × (99554421)
+ 55555839 × 1 giving us 55555839
+ 55555839 × 20 producing 1111116780
+ 55555839 × 400 producing 22222335600
+ 55555839 × 4000 giving us 222223356000
+ 55555839 × 50000 what gives us 2777791950000
+ 55555839 × 500000 yielding 27777919500000
+ 55555839 × 9000000 that equals 500002551000000
+ 55555839 × 90000000 which equals 5000025510000000

= 5530829384814219
