No problem, we've got 2163 and 1320 to multiply
2163 × 1320 = 1320 × (2163)
+ 1320 × 3 what gives us 3960
+ 1320 × 60 resulting in 79200
+ 1320 × 100 what gives us 132000
+ 1320 × 2000 yielding 2640000

= 2855160
