Create a function that takes a list of numbers and returns the smallest number in the list.
find_smallest_num([34, 15, 88, 2]) ➞ 2
find_smallest_num([34, -345, -1, 100]) ➞ -345
find_smallest_num([-76, 1.345, 1, 0]) ➞ -76
find_smallest_num([0.4356, 0.8795, 0.5435, -0.9999]) ➞ -0.9999
find_smallest_num([7, 7, 7]) ➞ 7