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: [303, 565, -133, 201, -477, -401, 993, 609, 986, -597, 582, -589, 273, -562, -724]

[300, 560, -130, 200, -480, -400, 990, 610, 990, -600, 580, -590, 270, -560, -720]