How many miligrams and mililiters are in 0.83 lbs of solution

The measure of "gel polymer solution" pack = "4" x 10"
weight (shipping in lb.) = 0.83 lb.
Do the Math now;

Change for me 0.83 lb to:
A- milititers = ?
B- miligrams = ?



the product is this:
"Walgreens's Reussable Cold Pack"
http://www.walgreens.com/store/c/walgree…

0.83lb x 454grams / 1lb = 376.82grams x 1000mg = 376,820mg

Assuming your product is water at 4 degrees celcisus as well then the weight should be equalivent to how much it weighes according to specific gravity / density.

Water at 4 degrees celcius is always equal to 1.0g/1.0mL