Alright, let's work through 2720 times 8563 step by step
2720 × 8563 = 8563 × (2720)
+ 8563 × 0 which equals 0
+ 8563 × 20 giving us 171260
+ 8563 × 700 that results in 5994100
+ 8563 × 2000 what gives us 17126000

= 23291360
