Or you could do what I do in the real world of consulting: I google it to find out if someone else has done all the hard work for me.
1. Every gallon of sea water has about four ounces of salt in it, on average. This means that if you dried the sea out to obtain the salt in it, there would be enough salt to put a layer of the chemical around the world 147 feet thick!
2. In 1983 China produced 401,000 metric tons of tea out of a total world production of 2.06 million tons.
Why reinvent the wheel? ;-)