Alright, let's work through 2172 times 1171 step by step
2172 × 1171 = 1171 × (2172)
+ 1171 × 2 that is equal 2342
+ 1171 × 70 producing 81970
+ 1171 × 100 giving us 117100
+ 1171 × 2000 producing 2342000

= 2543412
