Thank you, that was very informative! With automatic translation to English I could make sense of almost everything. I like your calculations for use of the cylinders during the 7 year time span. During the pandemic, I found it difficult to get the cassette stoves and the cylinders. The gas was not so well available, then it became quite expensive where I am. However, I have been cooking on the cassette stove for over a year now and am very happy about the experience. It is definitely good to encorporate stockpiling and preparation items into daily life. Thank you also for explaining how to empty a cylinder. Thank you, Sensei-san! Keep up the good work!