Alright, let's work through 4238 times 6443 step by step
4238 × 6443 = 6443 × (4238)
+ 6443 × 8 what gives us 51544
+ 6443 × 30 giving us 193290
+ 6443 × 200 giving us 1288600
+ 6443 × 4000 resulting in 25772000

= 27305434
