Since 1 Guyanaese Dollar is equal to 0.003983419989321177 Cayman Islands Dollars, we could say that n Guyanaese Dollars are equal to 0.003983419989321177 times n Cayman Islands Dollars. In other words, we could use the following formula:
Cayman Islands Dollars = Guyanaese Dollars x 0.003983419989321177
For example, let's say that we want to convert 2.0 Guyanaese Dollars to Cayman Islands Dollars. Then, we just replace Guyanaese Dollars in the abovementioned formula with 2.0:
Cayman Islands Dollars = 2.0 x 0.003983419989321177
That is, 2.0 Guyanaese Dollars are equal to 0.007966839978642355 Cayman Islands Dollars.