It is 511 ml, approx.
Assuming your tea cup holds six fluid ounces, then 18 fluid ounces would be equal to three tea cups.
how much an oz
.42 oz...
17 oz
how much is silver per oz?
there are 170g in 6 oz
6.87842 oz
35.27 oz.
how much for a 3.7 oz letter
50.72103 Ounce (Oz)
272 oz
32 oz.