Alright, let's work through 4230 times 5120 step by step
4230 × 5120 = 5120 × (4230)
+ 5120 × 0 what gives us 0
+ 5120 × 30 that results in 153600
+ 5120 × 200 what gives us 1024000
+ 5120 × 4000 that equals 20480000

= 21657600
