Alright, let's work through 8680 times 2142 step by step
8680 × 2142 = 2142 × (8680)
+ 2142 × 0 giving us 0
+ 2142 × 80 what gives us 171360
+ 2142 × 600 what gives us 1285200
+ 2142 × 8000 resulting in 17136000

= 18592560
