Alright, let's work through 2164 times 7222 step by step
2164 × 7222 = 7222 × (2164)
+ 7222 × 4 yielding 28888
+ 7222 × 60 what gives us 433320
+ 7222 × 100 producing 722200
+ 7222 × 2000 producing 14444000

= 15628408
