Alright, let's work through 2457 times 5294 step by step
2457 × 5294 = 5294 × (2457)
+ 5294 × 7 what gives us 37058
+ 5294 × 50 that equals 264700
+ 5294 × 400 that is equal 2117600
+ 5294 × 2000 yielding 10588000

= 13007358
