Given the task definition and input, reply with output. In this task, you are given a list of integers and an integer k. You need to find the kth smallest element in the input list and return that.

[67, 157, 179, 171, 221, 292, 275, 125, 54, 113, 209, 232, 16, 15, 81, 178, 174, 168, 69, 90], k=12

171