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: [2, 120, -654, -677, 251, -390, 899, 638, -835, 671, 25, -532, 824, -451]

[0, 120, -650, -680, 250, -390, 900, 640, -840, 670, 20, -530, 820, -450]