Alright, let's work through 7872 times 1380 step by step
7872 × 1380 = 1380 × (7872)
+ 1380 × 2 resulting in 2760
+ 1380 × 70 yielding 96600
+ 1380 × 800 resulting in 1104000
+ 1380 × 7000 that is equal 9660000

= 10863360
