Alright, let's work through 87675486 times 73164503 step by step
87675486 × 73164503 = 73164503 × (87675486)
+ 73164503 × 6 that equals 438987018
+ 73164503 × 80 that is equal 5853160240
+ 73164503 × 400 resulting in 29265801200
+ 73164503 × 5000 producing 365822515000
+ 73164503 × 70000 that results in 5121515210000
+ 73164503 × 600000 which equals 43898701800000
+ 73164503 × 7000000 producing 512151521000000
+ 73164503 × 80000000 giving us 5853160240000000

= 6414733358473458
