Assume that the solar wind causes the Sun to lose mass at a rate of 1.1 x 109 kg/s. If you assume the wind is emitted a constant rate, estimate the time (in units of Gyr =Gigayears = 109 years) that it will take the entire Sun to evaporate via its solar wind emission. (Of course, the rate won't be constant throughout the lifetime of the Sun---this is just a rough estimate to understand the timescale associated with this process.)