The density of raw milk depends on its composition and temperature, but $($although literature data varies slightly$)$ is usually around P milk$=1\mathrm{.}021$ g$/$cm$3.$

Express density of milk in unusual units of points per cube inch with a precision of four places after the decimal.

Assume $1$ kg $=2\mathrm{.}2$ lb and $1$ in $=0\mathrm{.}0254$ m$.$