Since 1 US Dollar is equal to 0.820286 Manx pounds, we could say that n United States Dollars are equal to 0.820286 times n Manx pounds. In other words, we could use the following formula:
Manx pounds = United States Dollars x 0.820286
For example, let's say that we want to convert 2.0 United States Dollars to Manx pounds. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Manx pounds = 2.0 x 0.820286
That is, 2.0 United States Dollars are equal to 1.640572 Manx pounds.