Alright, let's work through 1457 times 580 step by step
1457 × 580 = 580 × (1457)
+ 580 × 7 what gives us 4060
+ 580 × 50 producing 29000
+ 580 × 400 yielding 232000
+ 580 × 1000 giving us 580000

= 845060
