Alright, let's work through 1397 times 4892 step by step
1397 × 4892 = 4892 × (1397)
+ 4892 × 7 what gives us 34244
+ 4892 × 90 that is equal 440280
+ 4892 × 300 that is equal 1467600
+ 4892 × 1000 that results in 4892000

= 6834124
