Alright, let's work through 7930 times 6378 step by step
7930 × 6378 = 6378 × (7930)
+ 6378 × 0 that results in 0
+ 6378 × 30 that results in 191340
+ 6378 × 900 which equals 5740200
+ 6378 × 7000 yielding 44646000

= 50577540
