Calories Per Pound Of Food

Use Case: I have 20 food items in my diary. I want to know how many calories I've consumed per pound of food. To do that, I have to pull out a calculator and tally the weight of the 20 food items: 904 grams divided by 1000 calories comes to 500 calories per pound. Not too bad. Should be lower in order to reduce weight.

I would like to be able to highlight the 20 items in order to have a quick tally of the total weight in grams. We can highlight to get a tally of grams of protein, fat, carbohydrate, water, vitamin A, but not the weight of the food. That's my feature request. Have a nice day.