Find the answer to this math problem: Laura loves to cook. One day she decided to make dinner for her family. She bought the necessary ingredients for this occasion: two salads, 2 kilograms of beef, 1 kilogram of potatoes, and two liters of juice. One salad costs $3, and one kilogram of beef is two times more expensive. One kilogram of potatoes costs one-third of the price of one salad, and one liter of juice is $1.5. How much did Laura need to pay for all the products she bought?