Alright, let's work through 1866 times 766 step by step
1866 × 766 = 766 × (1866)
+ 766 × 6 that results in 4596
+ 766 × 60 that equals 45960
+ 766 × 800 which equals 612800
+ 766 × 1000 that results in 766000

= 1429356
