No problem, we've got 1339 and 2220 to multiply
1339 × 2220 = 2220 × (1339)
+ 2220 × 9 which equals 19980
+ 2220 × 30 that equals 66600
+ 2220 × 300 producing 666000
+ 2220 × 1000 resulting in 2220000

= 2972580
