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: [657, -308, 112, -385, -479, -774, 23, 970, -295, 423, -336, -910]

[660, -310, 110, -380, -480, -770, 20, 970, -300, 420, -340, -910]