How to solve Problem $2$ chapter $6$ from structural concrete $7$th edition by nadim hassoun?

$6\mathrm{.}2$ Determine the instantaneous and long$-$term deflection of the free end of a $12-$ft$-$span cantilever beam for each of the following load conditions. Assume that only dead loads are sustained, and the dead loads include the self$-$weight of the beams. Use $f_c^{\text{'}}=4$ksi,$f_y=60$ksi, and a time limit of more than $5$ years. Refer to Fig. $6\mathrm{.}13,$

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