Calculating Mass of Star from Orbital Distance and Period

[bigtymer8700]

iI was asked to find the mass of a star given the orbital distance and the period. my mass came out to be 2.31^30 kg. Its then asking me to express it in terms of our sun's mass. Really don't understand what it means by that

 

[hage567]

You take the ratio. You just divide your star's mass by that of the sun.