Alright, let's work through 7893 times 2470 step by step
7893 × 2470 = 2470 × (7893)
+ 2470 × 3 producing 7410
+ 2470 × 90 what gives us 222300
+ 2470 × 800 resulting in 1976000
+ 2470 × 7000 producing 17290000

= 19495710
