In a field analysis, Sean found that another important product for Cubical is SKU_Y29, since this is a product that requires a lot of space in the warehouse. Thus, the company wants to better predict how much space to allocate for this. For this SKU, the monthly demand follows a uniform distribution with a minimum value of 11 units and a maximum of 21 units. Taking this into consideration, answer the following questions:

Given this uniform distribution, what is the probability that Cubical will be able to fulfill the demand of one month of sales if it has 18 units of SKU_Y29 in stock?

Enter your answer as a decimal form with THREE decimal places. For example, if your answer is 76.06%, you should enter 0.761 in the answer box.

Given this uniform distribution, what is the probability of the monthly demand of SKU_Y29 being between 15 and 18 units (both included)?