Define a function small_and_big that consumes a value and returns a tuple of two numbers: half the value and twice the value. Then, you will need to call your function once to create two variables half and twice for the number 50. Note: Your function will be unit tested against multiple arguments. It is not enough to get the right output for your own test cases, you will need to be able to handle any kind of number. Note: You are not allowed to use list or tuple indexing. Note: You may only call your function once.