Mellie,
Use the calculation button and you can do the calculations straight into the post :)
$${\mathtt{57}}{!} = {\mathtt{40\,526\,919\,504\,877\,216\,755\,680\,601\,905\,432\,322\,134\,980\,384\,796\,226\,602\,145\,184\,481\,280\,000\,000\,000\,000}}$$
