Please help me solve this problem mathematically.

Calculate the NDS Interaction Equation $3\mathrm{.}9-3($to $3$ decimals$)$ for the exterior load bearing wall subject to combined axial compression $($due to D $+$ Lr$)$ and bending $($due to Wind$)$ for the following conditions:

Grade and species:No$.1$ grade, Southern Pine

Wall height:$14-0$

Framing size$/$spacing:

$2$x$6$ studs at $16$ O$.$C$.$

$2$x$6$ bottom plate

Double $2$x$6$ Top Plate

Sheathing:Each side for weak axis support

Loading type:Dead $+$ Roof Live $+$ WindD $=900$ lb$/$ftLr $=750$ lb$/$ftWind $=20$ psf on wall surface