Part 1)An entrepreneur is currently the sole shareholder in her venture, with 100,000 shares. An investor offers her $60,000 for 20,000 new shares. What are the pre- and post-money values of the venture?

Part 2) After its last round of financing, a venture had 400,000 shares outstanding and a post-money value of $2 million. If the entrepreneur is confident the company is currently worth 25% more and needs to raise $500,000, how many shares will he sell? What are the new pre- and post-money values of the venture?

Please show all calculations.