No problem, we've got 87528373 and 63293923 to multiply
87528373 × 63293923 = 63293923 × (87528373)
+ 63293923 × 3 that results in 189881769
+ 63293923 × 70 resulting in 4430574610
+ 63293923 × 300 yielding 18988176900
+ 63293923 × 8000 resulting in 506351384000
+ 63293923 × 20000 producing 1265878460000
+ 63293923 × 500000 what gives us 31646961500000
+ 63293923 × 7000000 that equals 443057461000000
+ 63293923 × 80000000 yielding 5063513840000000

= 5540014100977279
