Alright, let's work through 6640 times 7393 step by step
6640 × 7393 = 7393 × (6640)
+ 7393 × 0 yielding 0
+ 7393 × 40 that equals 295720
+ 7393 × 600 what gives us 4435800
+ 7393 × 6000 yielding 44358000

= 49089520
