Alright, let's work through 1860 times 771 step by step
1860 × 771 = 771 × (1860)
+ 771 × 0 yielding 0
+ 771 × 60 that equals 46260
+ 771 × 800 that results in 616800
+ 771 × 1000 yielding 771000

= 1434060
