Alright, let's work through 1563 times 2539 step by step
1563 × 2539 = 2539 × (1563)
+ 2539 × 3 that equals 7617
+ 2539 × 60 what gives us 152340
+ 2539 × 500 resulting in 1269500
+ 2539 × 1000 giving us 2539000

= 3968457
