im not good at math, but calculating the approximate 2 teaspoons on coffee+price for coffee machine with no addings it turns out to be 0.19€ per one cup
1.100*100÷10= 916.666 ≈9.17
1000*100÷10= 10.000 = 10
10+9.17=19.17≈0.19
as a result 0.19 per cup, i was taught to count this way in school
you can't sell the coffee for 10 cents