how do you calculate a market cap..

Guys,

Can someone please give me a straight forward answer on this.. I want to know what you do and don't include in a market cap calculation...

Below I will use Mantle Mining for an example..

Current market cap: @ 31c fully diluted is $35.1 million

Number of shares on issue: 58.9 Million shares

Number of unlisted shares on issue: 9.1 Million shares

Number of options on issue: 38.9 Million

Number of unlisted options on issue: 6.3 Million

Options/codes/expiries: MNMO expires 30 April 2009 25c

Cash in bank: 1.849M

Obviously we multiply the number of shares by the share price.

How do we calculate the options? (i.e. do we include the exercise price)

Do we include cash on hand?

What do we do with unlisted options?

What do we do with unlisted shares?

I hope someone can help..

Cheers
Kevi