Complete this by first working these problems on paper, then put them into pep8 and verify they work correctly. Upload the pep0 programs only

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 then subtract the second from the first. Verify your solution works if the result is positive or negative.
3. Input one integer using decimal input trap and multiply it by 4. Output the result.
4. Similar to #3, but divide the integer by 16. Output the result.