Can someone please help me code in the simplest form. I'm working in visual studios and i need to code this problem and don't know where to start

The American College of Sports Medicine recommends that you maintain a training heart rate (THR) during an aerobic workout. Your training heart rate is computed as:

(220 your age) times 0.7 plus resting heart rate (RHR) times 0.3

Design a form that allows inputs for age and RHR then computes and outputs the recommended THR. You may use text boxes for program inputs, a button to execute the calculations and a list box, label or text box to show the results. Your form should also have Quit button as shown in class to terminate the form.