That's what I suggested below.

NB? Ha-ha. Are you in business? Business means you are marriaged with it! You know what a marriage really means, don't you?

Ok, I mean you need to know every small details and cover all aspects of it. If you can't identify your CFO's mistakes, how can you be in real charge?

Have you been auditted by Uncle Sam? Or better yet, have you served any jail term for violating the tax code?

I told you usually I don't play the numbers. But that doesn't mean I am incapable of doing so. So you want to buy my HR consultation service, or hire me as your internal auditor?

Ha-ha, Google engineering sometimes does save you a buck or two, here and there. But Google can't go to court for you, defend for you and bribe the judge and the jurors, wrong?