Alright, let's work through 1681 times 1855 step by step
1681 × 1855 = 1855 × (1681)
+ 1855 × 1 that is equal 1855
+ 1855 × 80 that equals 148400
+ 1855 × 600 what gives us 1113000
+ 1855 × 1000 giving us 1855000

= 3118255
