No problem, we've got 99019949 and 39371819 to multiply
99019949 × 39371819 = 39371819 × (99019949)
+ 39371819 × 9 which equals 354346371
+ 39371819 × 40 what gives us 1574872760
+ 39371819 × 900 which equals 35434637100
+ 39371819 × 9000 that equals 354346371000
+ 39371819 × 10000 producing 393718190000
+ 39371819 × 000000 yielding 0
+ 39371819 × 9000000 giving us 354346371000000
+ 39371819 × 90000000 which equals 3543463710000000

= 3898595509417231
