According to a study, $90 \%$ of K-12 schools or districts in a country use digital content such as ebooks, audio books, and digital textbooks. Of these $90 \%, 11$ out of 20 us content as part of their curriculum. Find the probability that a randomly selected school or district uses digital content and uses it as part of their curriculum. The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is (Round to three decimal places as needed.)

Step 1 ：The problem is asking for the probability that a school or district both uses digital content and uses it as part of their curriculum. This is a conditional probability problem. We know that 90% of schools use digital content, and of those, 11 out of 20 use it as part of their curriculum. So, the probability we're looking for is \(0.9 \times \frac{11}{20}\).

Step 2 ：Calculate the probability: \(0.9 \times \frac{11}{20} = 0.495\)

Step 3 ：Final Answer: The probability that a randomly selected school or district uses digital content and uses it as part of their curriculum is \(\boxed{0.495}\).