Alright, let's work through 85166528 times 62859909 step by step
85166528 × 62859909 = 62859909 × (85166528)
+ 62859909 × 8 what gives us 502879272
+ 62859909 × 20 that equals 1257198180
+ 62859909 × 500 producing 31429954500
+ 62859909 × 6000 giving us 377159454000
+ 62859909 × 60000 producing 3771594540000
+ 62859909 × 100000 resulting in 6285990900000
+ 62859909 × 5000000 giving us 314299545000000
+ 62859909 × 80000000 that results in 5028792720000000

= 5353560199925952
