Alright, let's work through 1869 times 1131 step by step
1869 × 1131 = 1131 × (1869)
+ 1131 × 9 giving us 10179
+ 1131 × 60 resulting in 67860
+ 1131 × 800 producing 904800
+ 1131 × 1000 resulting in 1131000

= 2113839
