Complete this by first working these problems on paper, then put them into pep8 and verify they work correctly 1. Input 3 decimal numbers (integers) .Add them together and output the result. Verify your solution works for positive numbers, and negative numbers. 2. Input two decimal numbers and but subtract the second from the first. Verify your solution works if the result is positive or negative. 3. Input one decimal number (integer) and multiply it by 4. Output the result. 4. Input one decimal number and divide it by 16. Output the result