Alright, let's work through 2390 times 7880 step by step
2390 × 7880 = 7880 × (2390)
+ 7880 × 0 that equals 0
+ 7880 × 90 that results in 709200
+ 7880 × 300 yielding 2364000
+ 7880 × 2000 that equals 15760000

= 18833200
