Alright, let's work through 5138 times 814 step by step
5138 × 814 = 814 × (5138)
+ 814 × 8 which equals 6512
+ 814 × 30 which equals 24420
+ 814 × 100 giving us 81400
+ 814 × 5000 which equals 4070000

= 4182332
