There is a square-shaped cookie. When you add up all the sides of this cookie, you get 17.8 centimeters (cm). Find the length of one side of the cookie.
17.8 4 [OP_DIV]
var_a = 17.8
var_b = 4
var_c = var_a / var_b
print('{:.2f}'.format(round(var_c+1e-10,2)))