Alright, let's work through 1394 times 5728 step by step
1394 × 5728 = 5728 × (1394)
+ 5728 × 4 what gives us 22912
+ 5728 × 90 which equals 515520
+ 5728 × 300 that results in 1718400
+ 5728 × 1000 that results in 5728000

= 7984832
