Finding density when given mass and volume

[samarama08]

A sample of an unknown metal has a mass of 3.51x10^3 mg and a volume of 8.01 cm3. What is the density of the metal in units of grams per cubic centimeter?

I have tried the density formula, d=m/v but the answer keeps coming up incorrect. I am not quite sure how to find this density when the mass is in scientific formula.

can anyone help

thanks

 

[Yanick]

Check your units.