Alright, let's work through 2145 times 2340 step by step
2145 × 2340 = 2340 × (2145)
+ 2340 × 5 what gives us 11700
+ 2340 × 40 producing 93600
+ 2340 × 100 which equals 234000
+ 2340 × 2000 yielding 4680000

= 5019300
