Alright, let's work through 4720 times 4330 step by step
4720 × 4330 = 4330 × (4720)
+ 4330 × 0 that results in 0
+ 4330 × 20 that equals 86600
+ 4330 × 700 which equals 3031000
+ 4330 × 4000 which equals 17320000

= 20437600
