Two different numbers are randomly selected from the set \(\{ -2, -1, 0, 3, 4, 5\}\) and multiplied together. What is the probability that the product is \(0\)? Express your answer as a fraction in simplest form, \(\frac{k}{m}\), and give the value of \(k + m\).

Let's think step by step and output the final answer within \boxed{}.
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