Alright, let's work through 85817365 times 6228789 step by step
85817365 × 6228789 = 6228789 × (85817365)
+ 6228789 × 5 producing 31143945
+ 6228789 × 60 giving us 373727340
+ 6228789 × 300 giving us 1868636700
+ 6228789 × 7000 yielding 43601523000
+ 6228789 × 10000 resulting in 62287890000
+ 6228789 × 800000 yielding 4983031200000
+ 6228789 × 5000000 producing 31143945000000
+ 6228789 × 80000000 yielding 498303120000000

= 534538259120985
