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: [334, 637, 621, -633, -176, -669, 310, -834, 653, 307]

[330, 640, 620, -630, -180, -670, 310, -830, 650, 310]