I need help solving this exercise step by step, please.

A strip footing with a width of $3$ m at a depth of $1\mathrm{.}0$ m is constructed on a $25$ m thick sandy soil stratum.

Given: $=18k\frac{N}{m^3},$ the elastic modulus of the sandy soil is $8,500k\frac{N}{m^2},$ the gross pressure is $200k\frac{N}{m^2}.$

Estimate the settlement of the footing after $10$ years by using the strain influence factor method $($Schmertmann

et al$.1978)$ as outlined below.

$S_e=C_1{C}_2(\frac{?}{\text{b}\text{a}\text{r}}(q)-q){\displaystyle \underset{0}{\overset{z_2}{}}}\frac{I_z}{E_s}z$

$C_1=1-0\mathrm{.}5\frac{q}{(\frac{?}{\text{b}\text{a}\text{r}}(q))-q}$

$C_2=1+0\mathrm{.}2*log(\frac{\text{t}\text{i}\text{m}\text{e}in\text{y}\text{e}\text{a}\text{r}\text{s}}{0\mathrm{.}1})$

$I_{zo}=0\mathrm{.}1+0\mathrm{.}0111(\frac{L}{B}-1)0\mathrm{.}2$

$I_{z(m)}=0\mathrm{.}5+0\mathrm{.}1\sqrt[\phantom{2}]{\frac{(\frac{?}{\text{b}\text{a}\text{r}}(q))-q}{q_{z(1)}^{\text{'}}}}$

$\frac{z_1}{B}=0\mathrm{.}5+0\mathrm{.}0555(\frac{L}{B}-1)1$

$\frac{z_2}{B}=2+0\mathrm{.}222(\frac{L}{B}-1)4$