No problem, we've got 1521 and 2889 to multiply
1521 × 2889 = 2889 × (1521)
+ 2889 × 1 what gives us 2889
+ 2889 × 20 producing 57780
+ 2889 × 500 which equals 1444500
+ 2889 × 1000 that equals 2889000

= 4394169
