We're going to solve 4838 multiplied by 6438
4838 × 6438 = 6438 × (4838)
+ 6438 × 8 what gives us 51504
+ 6438 × 30 yielding 193140
+ 6438 × 800 yielding 5150400
+ 6438 × 4000 giving us 25752000

= 31147044
