No problem, we've got 2768 and 5640 to multiply
2768 × 5640 = 5640 × (2768)
+ 5640 × 8 yielding 45120
+ 5640 × 60 giving us 338400
+ 5640 × 700 resulting in 3948000
+ 5640 × 2000 yielding 11280000

= 15611520
