No problem, we've got 64580173 and 83854214 to multiply
64580173 × 83854214 = 83854214 × (64580173)
+ 83854214 × 3 that results in 251562642
+ 83854214 × 70 resulting in 5869794980
+ 83854214 × 100 which equals 8385421400
+ 83854214 × 0000 that results in 0
+ 83854214 × 80000 producing 6708337120000
+ 83854214 × 500000 that equals 41927107000000
+ 83854214 × 4000000 yielding 335416856000000
+ 83854214 × 60000000 producing 5031252840000000

= 5415319646899022
