Bluebulb Projects' The Measure of Things presents:
7,500 is about three-and-a-half times the number of Steps in the Sears Tower.
In other words, it's 3.5560 times the count of Steps in the Sears Tower, and the count of Steps in the Sears Tower is 0.28120 times that amount.
(a.k.a. Willis Tower) (Chicago, Illinois) (steps per stairwell)