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: [397, 580, -463, -297, 399, -342, -159, -501, 418, 874, -210, 622, -906, 345, -467]

[400, 580, -460, -300, 400, -340, -160, -500, 420, 870, -210, 620, -910, 340, -470]