Step 1 :The letters from K to Q are K, L, M, N, O, P, Q. That's 7 letters.
Step 2 :The total number of cards is 9.
Step 3 :The probability of choosing a letter from K to Q is the number of favorable outcomes divided by the total number of outcomes.
Step 4 :So, the probability is \(\frac{7}{9}\).
Step 5 :\(\boxed{\frac{7}{9}}\) is the final answer.