Domingo aims to save money to achieve three objectives. To start with, he aims to retire in $30$ years, with a monthly retirement income of R$16,000$ for $25$ years, starting one month after his retirement. Secondly, he plans to acquire a cabin in Cape Town in a decade, estimated to cost R$375,000.$ Lastly, upon his demise after $25$ years of withdrawals, he desires to leave an inheritance of R$1\mathrm{.}5$ million to his nephew Jimmy. He can allocate R$2,150$ per month for savings over the next ten years. Given an Effective Annual Rate $($EAR$)$ of $10$ percent before retirement and $7$ percent after, how much must he save monthly from years $11$ to $30?$