Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: does anyone know approximately how many servings can this machine provide with one full hopper?
Document: I don't know how we even survived without this machine. We got one a few weeks ago and have made approximately 300 cups of cappuccino since then (that's right, over ten cups a day easily but not all by a single person). Very easy to use, great quality drinks.
I dialed it down to 9. Bam. With regard to the amount of grind, at one point I had it all the way to the right for as many grounds as it would expel. Too much. I slowly scaled it back so the dial is now on the 5-o'clock position. Bam. The only other variable to tweak was tamping pressure. Obviously there is no pressure gauge so how the heck does one even know what 10-20 pounds of pressure is.
As many of you will do, I researched this purchase very carefully and bought this unit three days ago. It was Dead on Arrival - the burr grinder unit is broken. Breville requires a call to their customer service for warranty. After listening to the noises coming from the unit over the phone, the representative said that it would have to be replaced. They requested that I provide a number from the bottom of the unit, but the sticker is not there - more problems.
If you are using a darker roast, the beans will be too sticky and won't slide into the grinder when the hopper is less than half full. You'll have to remove the lid and push the beans in as you grind them. With medium and light roasted beans, this is not a problem as they are usually dry enough not to stick.
Got this for over $200 less from new. The refurbished one I got looks brand new and works perfectly! Very well built and makes excellent latte's and espressos. I use the dual filter as it is much easier and works just fine. The built in burr grinder works great too. I highly recommmend this to anyone who wants a semi-professional espresso machine.
I never understood why Europeans said that Americans knew nothing about coffee until I bought this machine. The taste is smooth and amount of creme is wonderful. One thing a person has to be mindful of is buying beans with a high oil content. It binds up the grinder. I have found the Rio Grande Roasters has a wonderful, moderately priced bean (about 9.00 a pound) called the dark secret blend that works well with this machine.I would recommend this machine to anyone.
The tank runs across the whole back of the machine, and one can pour water in from the other side of the tank. As for how much the grinder hopper holds, not a great idea. Best bet is to measure in the beans you wish for each cup. Timed grinders cannot compensate for hangups and bridging as the beans drop in.
I have had this machine for approximately two years. I believe that for the money it is a great espresso maker and produces very solid cafe-quality espresso that one has come to expect from a machine that is far more expensive. My biggest gripe about the machine is that the grinder gets jammed way too often and is extremely difficult to maintain. I like to keep my coffee beans in the freezer for maximum freshness.
It's an excellent coffee machine. Don't know what else to write as it is almost perfect. I have owned a couple of Keurigs earlier and this one beats any of them by a mile, if not by light years. it's that good and there's no exaggeration.
This is an aesthetically pleasing machine with many niceties, from its easy pull plug to all the little extras that come with it and which are designed to store in a neat little drawer in the base. The one thing it didn't come with: the capacity to make good coffee. After being used to Saecos and Juras, this machine produced very poor crema and routinely extracted a volume that was far below that of other machines for either single or double settings.
Answer: Yes, it depends on how you make your coffee..But to me, make one everyday, it usually takes about a week to refill the tank..And remember it also use the water in the tank when you steam your milk..