Alright, let's work through 1815 times 2438 step by step
1815 × 2438 = 2438 × (1815)
+ 2438 × 5 that equals 12190
+ 2438 × 10 producing 24380
+ 2438 × 800 that equals 1950400
+ 2438 × 1000 which equals 2438000

= 4424970
