A glass container was initially charged with $2\mathrm{.}30$ moles of a gas sample at $3\mathrm{.}75$atm and $21\mathrm{.}7C.$ Some of the gas was released as the temperature was increased to $28\mathrm{.}1C,$ so the final pressure in the container was reduced to $0\mathrm{.}998$atm. How many moles of the gas sample are present at the end?