Alright, let's work through 2131 times 8241 step by step
2131 × 8241 = 8241 × (2131)
+ 8241 × 1 giving us 8241
+ 8241 × 30 resulting in 247230
+ 8241 × 100 producing 824100
+ 8241 × 2000 giving us 16482000

= 17561571
