how do you do this

java script

Q2: Design a problem to show the three types of data conversions. For example, if you run the program, it may display the following messages: > run Promotion 1. This is to show assignment conversion: Input an int a: 1 3 Assign a to b. a is 3 bis 3.0 2. This is to show promotion conversion: Input an int a: Input a double b: 20 Assign a/b to cu la 15 bis 21.0 CS 2.5 3. This is to show casting conversion: Input a double d: Input an inte: Assign (int)d/e to f. d is 5,7 e is 2 f is 2