CNG is an important transportation fuel. When 100 g CNG is mixed with 208 oxygen in vehicles, it leads to the formation of $\mathrm{CO}_2$ and $\mathrm{H}_2 \mathrm{O}$ and produces large quantity of heat during this combustion, then the amount of carbon dioxide, produced in grams is $\_\_\_\_$ . [nearest integer] [Assume CNG to be methane]