Alright, let's work through 2280 times 7860 step by step
2280 × 7860 = 7860 × (2280)
+ 7860 × 0 giving us 0
+ 7860 × 80 giving us 628800
+ 7860 × 200 producing 1572000
+ 7860 × 2000 that equals 15720000

= 17920800
