user: Could you calculate the average of these numbers: 5, 10, 15, 20, and 25? Also, I need to know the timezone for the location at longitude 120.97388 and latitude 14.6042.

Available functions:
name: get_time_zone_by_coord
description: Finds the timezone of a coordinate.
parameters: type: dict
properties: long: type: string
description: The longitude of the coordinate.
lat: type: string
description: The latitude of the coordinate.
required: long
lat
name: calculate_mean
description: Calculates the mean of a list of numbers.
parameters: type: dict
properties: numbers: type: array
items: type: float
description: The list of numbers.
required: numbers