They are important because without them there is basically no drawing every drawing includes lines
I'd say by rounding and similar techniques the answer is 468, though it doesn't say all the needed numbers.
The best recipe that I use is so simple. Coconut milk (especially with the cream, you can get those with canned coconut milks), add your blueberries, strawberry, stevia if you prefer a little sweeter, I personally like to add bananas to my smoothies so if you want to you, you can do that as well. Then blend it up, if its too thick, add some water and blend it again and itll be perfect.