Alright, let's work through 9040 times 7872 step by step
9040 × 7872 = 7872 × (9040)
+ 7872 × 0 that equals 0
+ 7872 × 40 what gives us 314880
+ 7872 × 000 that equals 0
+ 7872 × 9000 yielding 70848000

= 71162880
