How do I report income from a closed business (which I received last year after I had closed the business) on my new business's S corp return?

I had an office which I closed and closed out the corporation and then I started a new corporation.  I received checks for the old corporation totaling $7400.  I want to report this but I'm not sure where to enter it on my new return.  I had an accountant who did this years ago but I don't know how he did it.  Thanks.