Alright, let's work through 1540 times 2138 step by step
1540 × 2138 = 2138 × (1540)
+ 2138 × 0 which equals 0
+ 2138 × 40 giving us 85520
+ 2138 × 500 what gives us 1069000
+ 2138 × 1000 which equals 2138000

= 3292520
