Helpful sites:
1. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwil5I2v56zyAhUU7HMBHYNTAnIQFnoECA8QAw&url=https%3A%2F%2Ftrumpexcel.com%2Fnamed-ranges-in-excel%2F&usg=AOvVaw358XCWHkD5PRxUyiDmk1tY
2. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwil5I2v56zyAhUU7HMBHYNTAnIQFnoECAMQAQ&url=https%3A%2F%2Fexceljet.net%2Fformula%2Fcreate-array-of-numbers&usg=AOvVaw10GljIWJ10w02HIA_Qd9MF