No problem, we've got 3878 and 5234 to multiply
3878 × 5234 = 5234 × (3878)
+ 5234 × 8 yielding 41872
+ 5234 × 70 that equals 366380
+ 5234 × 800 resulting in 4187200
+ 5234 × 3000 which equals 15702000

= 20297452
