Please check my thinking.
I think this all means we need to issue 666 new shares, and put 500 up for sale, and put 166 in the options pool. Is this right?
If your investors have agreed 30% based on the post-money valuation, and a 10% post-money options pool, then your example is correct. Or, to be entirely accurate:
(Percentage values rounded off to two decimals.)
However, this blindly assumes that you already have negotiated this result, or are in a position to actually negotiate this. There are other points that need to be settled, see for example the Venture Hacks article "The Option Pool Shuffle ". I assume you meant the question as a hypothetical example, just to see a basic math example of issuing new shares.