No problem, we've got 2834 and 1787 to multiply
2834 × 1787 = 1787 × (2834)
+ 1787 × 4 what gives us 7148
+ 1787 × 30 what gives us 53610
+ 1787 × 800 what gives us 1429600
+ 1787 × 2000 what gives us 3574000

= 5064358
