Alright, let's work through 2172 times 216 step by step
2172 × 216 = 216 × (2172)
+ 216 × 2 that equals 432
+ 216 × 70 what gives us 15120
+ 216 × 100 what gives us 21600
+ 216 × 2000 which equals 432000

= 469152
