No problem, we've got 4221 and 6280 to multiply
4221 × 6280 = 6280 × (4221)
+ 6280 × 1 what gives us 6280
+ 6280 × 20 that results in 125600
+ 6280 × 200 what gives us 1256000
+ 6280 × 4000 yielding 25120000

= 26507880
