ex2: product of integer primitive and reference types compiles and runs

What is the result of compiling and running this code using Java 17?

01 public class Ex1  {
02    public static void main(String[] args) {
03        Integer a = Integer.valueOf(7);
04        int c = a * 5;
05        System.out.println(c);
06    }
07 }

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Result:

35

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Integer reference type variable a multiplied by primitive integer literal 5 is stored in primitive integer variable c and sent to the console as the product, 35.