Alright, let's work through 87072897 times 5351565 step by step
87072897 × 5351565 = 5351565 × (87072897)
+ 5351565 × 7 which equals 37460955
+ 5351565 × 90 that results in 481640850
+ 5351565 × 800 giving us 4281252000
+ 5351565 × 2000 giving us 10703130000
+ 5351565 × 70000 giving us 374609550000
+ 5351565 × 000000 that equals 0
+ 5351565 × 7000000 what gives us 37460955000000
+ 5351565 × 80000000 producing 428125200000000

= 465976268033805
