No problem, we've got 1428 and 2220 to multiply
1428 × 2220 = 2220 × (1428)
+ 2220 × 8 yielding 17760
+ 2220 × 20 which equals 44400
+ 2220 × 400 yielding 888000
+ 2220 × 1000 that is equal 2220000

= 3170160
