Alright, let's work through 5390 times 4309 step by step
5390 × 4309 = 4309 × (5390)
+ 4309 × 0 that results in 0
+ 4309 × 90 what gives us 387810
+ 4309 × 300 producing 1292700
+ 4309 × 5000 that is equal 21545000

= 23225510
