user: I've been analyzing some financial algorithms and need to optimize a section where I calculate the GCD for two numbers, specifically 1200 and 21406. Additionally, for my stock portfolio analysis, I require the current stock price of Apple. Could you provide me with the greatest common divisor for those two numbers, and also fetch the latest price for the 'AAPL' stock?

Available functions:
name: get_stock_price_by_stock_name
description: Finds the price of a stock by its stock name.
parameters: type: dict
properties: stock_name: type: string
description: The stock name of the product, in the format of the stock symbol.
required: stock_name
name: mat_mul
description: Multiplies two matrices.
parameters: type: dict
properties: matA: type: array
description: The first matrix.
items: type: integer
matB: type: array
description: The second matrix.
items: type: integer
required: matA
matB
name: get_company_name_by_stock_name
description: Finds the company name of a stock by its stock name.
parameters: type: dict
properties: stock_name: type: string
description: The stock name of the product, in the format of the stock symbol.
required: stock_name
name: math_gcd
description: Calculates the greatest common divisor of two numbers.
parameters: type: dict
properties: a: type: integer
description: The first number. This should be the larger number.
b: type: integer
description: The second number.
required: a
b