No problem, we've got 3780 and 5251 to multiply
3780 × 5251 = 5251 × (3780)
+ 5251 × 0 which equals 0
+ 5251 × 80 that is equal 420080
+ 5251 × 700 that is equal 3675700
+ 5251 × 3000 yielding 15753000

= 19848780
