Since 1 East Caribbean Dollar is equal to 3.086388410945219 Solomon Islands Dollars, we could say that n East Caribbean Dollars are equal to 3.086388410945219 times n Solomon Islands Dollars. In other words, we could use the following formula:
Solomon Islands Dollars = East Caribbean Dollars x 3.086388410945219
For example, let's say that we want to convert 2.0 East Caribbean Dollars to Solomon Islands Dollars. Then, we just replace East Caribbean Dollars in the abovementioned formula with 2.0:
Solomon Islands Dollars = 2.0 x 3.086388410945219
That is, 2.0 East Caribbean Dollars are equal to 6.172776821890438 Solomon Islands Dollars.