No problem, we've got 1523 and 1787 to multiply
1523 × 1787 = 1787 × (1523)
+ 1787 × 3 yielding 5361
+ 1787 × 20 giving us 35740
+ 1787 × 500 what gives us 893500
+ 1787 × 1000 that equals 1787000

= 2721601
