Remark
Nothing the calculator is going to find
Answer
The best answer I can give you is 3^[(56^8)+(96^10)]
These numbers are huge. The calculator that came with windows will give you a number for these, but the calculator you own will not. It will go into scientific notation.
The answer to 56^8 by itself is 14 digits long and I'm almost sure that is not the answer that you want. Just showing the powers can be added should be enough.