Alright, let's work through 1145 times 1866 step by step
1145 × 1866 = 1866 × (1145)
+ 1866 × 5 that equals 9330
+ 1866 × 40 giving us 74640
+ 1866 × 100 producing 186600
+ 1866 × 1000 yielding 1866000

= 2136570
