Since 1 Guyanaese Dollar is equal to 0.39777701807041665 Indian Rupees, we could say that n Guyanaese Dollars are equal to 0.39777701807041665 times n Indian Rupees. In other words, we could use the following formula:
Indian Rupees = Guyanaese Dollars x 0.39777701807041665
For example, let's say that we want to convert 2.0 Guyanaese Dollars to Indian Rupees. Then, we just replace Guyanaese Dollars in the abovementioned formula with 2.0:
Indian Rupees = 2.0 x 0.39777701807041665
That is, 2.0 Guyanaese Dollars are equal to 0.7955540361408333 Indian Rupees.