Yeah... 100mcg/60ml = 1.67mcg/ml, which is pretty much useless. You have 100mcg/ml clen.
That means in 1ml solution you have 100mcg of clen. If you want to take 40mcg, you take 0.4ml.
However, if you don't understand that math or how to do it yourself then it is going to be too easy for you to mess this up. Using clen when you don't know exactly what you are doing is very dangerous.
You've only been working out for 6months, you're a newb (no offense). Get your diet right (don't just watch your calories - eat a proper fat-loss diet), lift hard and do some cardio. No way would I recommend someone in your position use clen under normal circumstances.