Alright, let's work through 84209855 times 31167974 step by step
84209855 × 31167974 = 31167974 × (84209855)
+ 31167974 × 5 which equals 155839870
+ 31167974 × 50 resulting in 1558398700
+ 31167974 × 800 that results in 24934379200
+ 31167974 × 9000 resulting in 280511766000
+ 31167974 × 00000 that equals 0
+ 31167974 × 200000 giving us 6233594800000
+ 31167974 × 4000000 that equals 124671896000000
+ 31167974 × 80000000 giving us 2493437920000000

= 2624650571183770
