Alright, let's work through 87154669 times 7597097 step by step
87154669 × 7597097 = 7597097 × (87154669)
+ 7597097 × 9 yielding 68373873
+ 7597097 × 60 producing 455825820
+ 7597097 × 600 that equals 4558258200
+ 7597097 × 4000 which equals 30388388000
+ 7597097 × 50000 giving us 379854850000
+ 7597097 × 100000 yielding 759709700000
+ 7597097 × 7000000 yielding 53179679000000
+ 7597097 × 80000000 that is equal 607767760000000

= 662122474395893
