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: [553, -246, 89, 861, -827, -571, 594, -152, 661, -264, 219, 673, 278, -262, -400]

[550, -250, 90, 860, -830, -570, 590, -150, 660, -260, 220, 670, 280, -260, -400]