You discover a new iron material with a BCC structure and the element has an atomic radius of $0\mathrm{.}124$ nm$.$ What is the material's theoretical density?

Note: use $6\mathrm{.}022$x $10^23$ for R and an atomic weight of $55\mathrm{.}887$ g$/$mol$.$

Give your answer in units of grams$/$cubic centimeter $($but just enter a number here$)$