Alright, let's work through 87723446 times 6877247 step by step
87723446 × 6877247 = 6877247 × (87723446)
+ 6877247 × 6 that results in 41263482
+ 6877247 × 40 which equals 275089880
+ 6877247 × 400 that equals 2750898800
+ 6877247 × 3000 resulting in 20631741000
+ 6877247 × 20000 producing 137544940000
+ 6877247 × 700000 that results in 4814072900000
+ 6877247 × 7000000 that equals 48140729000000
+ 6877247 × 80000000 giving us 550179760000000

= 603295805833162
