Their meatball subs are the worst thing on the menu. No way is the calorie count that low.
The scale can only give you a numerical reflection of your relationship with gravity. That's it. It cannot measure beauty, talent, purpose, life force, possibility, strength or love.
I went to the site to see what happens and I figured it out! You were looking at the "serving size," measured in grams. I did the SAME EXACT THING and it took me about 5 minutes of confused staring to figure it out.
The next number down is the calories. Yours was 520 calories.