No problem, we've got 1789 and 2790 to multiply
1789 × 2790 = 2790 × (1789)
+ 2790 × 9 that equals 25110
+ 2790 × 80 resulting in 223200
+ 2790 × 700 yielding 1953000
+ 2790 × 1000 that equals 2790000

= 4991310
