How can I total all the prices on my cart


I’m using ionic 3, angularfire2 I cant find a good solution, I want to add all the total prices on my cart

this is my firebase structure

i want to sum all the total


Please refer to this thread


I tried that thread, But still I can’t find the solution its a bit confusing and a little frustrating. Is there any tutorial with an explanations based on my structure? and thanks

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