Definition: In this task you will be given a list of integers. You should round each integer to the nearest tens place. That means you should round the number to the nearest multiple of 10.
Input: [668, 189, -25, -907, -437, -274, -350, -415, -972, 408, 298, -209, -671, 406, -902]

[670, 190, -20, -910, -440, -270, -350, -420, -970, 410, 300, -210, -670, 410, -900]