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: [388, 784, 996, -507, -202, -191, -475, -858, 320, -504, 50, -649, 687]

[390, 780, 1000, -510, -200, -190, -480, -860, 320, -500, 50, -650, 690]