No problem, we've got 83993816 and 87091004 to multiply
83993816 × 87091004 = 87091004 × (83993816)
+ 87091004 × 6 which equals 522546024
+ 87091004 × 10 that equals 870910040
+ 87091004 × 800 resulting in 69672803200
+ 87091004 × 3000 yielding 261273012000
+ 87091004 × 90000 that equals 7838190360000
+ 87091004 × 900000 giving us 78381903600000
+ 87091004 × 3000000 which equals 261273012000000
+ 87091004 × 80000000 yielding 6967280320000000

= 7315105765231264
