We're going to solve 6438 multiplied by 6239
6438 × 6239 = 6239 × (6438)
+ 6239 × 8 producing 49912
+ 6239 × 30 what gives us 187170
+ 6239 × 400 yielding 2495600
+ 6239 × 6000 giving us 37434000

= 40166682
