Alright, let's work through 8487663 times 8608543 step by step
8487663 × 8608543 = 8608543 × (8487663)
+ 8608543 × 3 giving us 25825629
+ 8608543 × 60 giving us 516512580
+ 8608543 × 600 giving us 5165125800
+ 8608543 × 7000 yielding 60259801000
+ 8608543 × 80000 that equals 688683440000
+ 8608543 × 400000 what gives us 3443417200000
+ 8608543 × 8000000 which equals 68868344000000

= 73066411905009
