Alright, let's work through 87770998 times 77085148 step by step
87770998 × 77085148 = 77085148 × (87770998)
+ 77085148 × 8 producing 616681184
+ 77085148 × 90 that equals 6937663320
+ 77085148 × 900 that results in 69376633200
+ 77085148 × 0000 producing 0
+ 77085148 × 70000 yielding 5395960360000
+ 77085148 × 700000 giving us 53959603600000
+ 77085148 × 7000000 giving us 539596036000000
+ 77085148 × 80000000 that results in 6166811840000000

= 6765840370937704
