How would I do this, so the function works for any number, and without using the split function

Write a function additions that takes four parameters numberi, number2, number3, number4 and returns two integers (1. the sum of the first two numbers and 2. the sum of the last two numbers) to the calling function. Save the function in a PyDev library module named functions.py Write a main program t04.py that takes four numbers from the user in a single line and splits them into four separate numbers. It then passes the numbers to the additions and displays the two numbers returned by the function. Sample run (Sample keyboard input is underlined): Enter four numbers separated by space: 1 2 3 4 Sum of the first two numbers is 3 and the sum of last two is 7