Alright, let's work through 6447 times 7590 step by step
6447 × 7590 = 7590 × (6447)
+ 7590 × 7 what gives us 53130
+ 7590 × 40 that equals 303600
+ 7590 × 400 that equals 3036000
+ 7590 × 6000 which equals 45540000

= 48932730
