Calculate the mass of 1.20*10 to the power of 16 atoms of cobalt. (Co=58.9)

Molar mass of cobalt = 58.9 g mol^-1
Mass of 6.022$\times$ 10²³ atoms = 58.9 g
Mass of 1.20$\times$10¹⁶ atoms = $\frac{58.9}{6.022\times {10}^{23}}\times 1.20\times {10}^{16}$ = 11.73$\times {10}^{-7 }$ g