Alright, let's work through 7531 times 7680 step by step
7531 × 7680 = 7680 × (7531)
+ 7680 × 1 that results in 7680
+ 7680 × 30 which equals 230400
+ 7680 × 500 resulting in 3840000
+ 7680 × 7000 giving us 53760000

= 57838080
