Alright, let's work through 28081887 times 82160249 step by step
28081887 × 82160249 = 82160249 × (28081887)
+ 82160249 × 7 that equals 575121743
+ 82160249 × 80 producing 6572819920
+ 82160249 × 800 giving us 65728199200
+ 82160249 × 1000 that results in 82160249000
+ 82160249 × 80000 that equals 6572819920000
+ 82160249 × 000000 what gives us 0
+ 82160249 × 8000000 that equals 657281992000000
+ 82160249 × 20000000 which equals 1643204980000000

= 2307214828309863
