No problem, we've got 7227 and 2839 to multiply
7227 × 2839 = 2839 × (7227)
+ 2839 × 7 that is equal 19873
+ 2839 × 20 that is equal 56780
+ 2839 × 200 what gives us 567800
+ 2839 × 7000 that equals 19873000

= 20517453
