Alright, let's work through 1591 times 1819 step by step
1591 × 1819 = 1819 × (1591)
+ 1819 × 1 what gives us 1819
+ 1819 × 90 that results in 163710
+ 1819 × 500 that results in 909500
+ 1819 × 1000 that results in 1819000

= 2894029
