Function: round_number
Description: This tool belongs to the Math API, which provides various mathematical operations. Tool description: Round a number to a specified number of decimal places.
Parameters:
type: dict
properties: number: type: float
description: The number to round.
decimal_places: type: integer
description: The number of decimal places to round to. Defaults to 0. 
default: 0
required: number
Response:
type: dict
properties: result: type: float
description: The rounded number.