smoothie help for the culinary idiot

[Pedal Wench]

Actually spinach is even higher in protein than top sirloin (1 g protein per 7 calories for spinach, vs. about 1 g per 8 calories for sirloin).

But how many calories (and quantity) of spinach would it take to equal an 8 ounce steak?

Edit: I did the math. 8 cups of raw spinach for one ounce of steak, or 64 cups of raw spinach for the same protein as an 8 ounce steak.