Final answer:
To find out how many more steps Kiera takes than Grace, subtract the number of steps Grace takes from the number of steps Kiera takes.
Step-by-step explanation:
To find out how many more steps Kiera takes than Grace, we need to subtract the number of steps Grace takes from the number of steps Kiera takes. Using the given information, we have:
Kiera's steps - Grace's steps = 8279 - 6542 = 1737
Therefore, Kiera takes 1737 more steps than Grace.