in r, Write a function to calculate the intrinsic value of a stock based on the Gordon growth model (GGM). (12 points) The Gordon growth model (GGM) is a formula used to determine the intrinsic value of a stock based on a future series of dividends that grow at a constant rate. The formula to calculate the intrinsic value, P, is as follows. P space equals space fraction numerator D over denominator r space minus space g end fraction ; where g is the growth rate of dividend, D is the value of next year's dividend, and r is the discount rate. Use the function to calculate the intrinsic value of a stock with D = 5, r = 10%, and g = 4%