Alright, let's work through 7515 times 72 step by step
7515 × 72 = 72 × (7515)
+ 72 × 5 that is equal 360
+ 72 × 10 which equals 720
+ 72 × 500 what gives us 36000
+ 72 × 7000 resulting in 504000

= 541080
