Please use excel solver: Browning Investments manages a large portfolio of stocks and bonds. It has a total of $4,400,000 to invest. The investments are divided into three categories: International stocks return 15% on their investment, standard stocks return 12%, and bonds return 8%. The bonds are considered safer investments and the international stocks are considered quite risky. Therefore, the company desires to have three times as much invested in bonds as it does in international stocks. If the company returned $252,000 last year, how much does it have invested in each investment type?