John decided to work with UBER. A car for him to buy costs R$ X$.$ He works $20$ days per month and earns an average net income of R$ $300\mathrm{.}00$ per day. In the $4$th year, assuming zero inflation over the four years, he intends to buy a new car for the same value of R$ X$.$His question is as follows: it is known that the current car will be depreciated, and he will sell it for a residual value of Y$.$ How much does he need to save from the R$ $300\mathrm{.}00$ daily income to buy the new car? X$=$ $ $40,000\mathrm{.}00$ and Y$=$ $ $5,000\mathrm{.}00.$