No problem, we've got 4721 and 6090 to multiply
4721 × 6090 = 6090 × (4721)
+ 6090 × 1 that is equal 6090
+ 6090 × 20 what gives us 121800
+ 6090 × 700 that equals 4263000
+ 6090 × 4000 giving us 24360000

= 28750890
