No problem, we've got 64361828 and 84225873 to multiply
64361828 × 84225873 = 84225873 × (64361828)
+ 84225873 × 8 yielding 673806984
+ 84225873 × 20 producing 1684517460
+ 84225873 × 800 which equals 67380698400
+ 84225873 × 1000 producing 84225873000
+ 84225873 × 60000 which equals 5053552380000
+ 84225873 × 300000 producing 25267761900000
+ 84225873 × 4000000 that results in 336903492000000
+ 84225873 × 60000000 what gives us 5053552380000000

= 5420931151175844
