Complete only federal form 1120 for 2018. Ignore references to other forms. Complete Schedule K by making up answers to questions where data has not been included. Schedule L and M-2 can be left blank since balance sheets and other information has not been included to complete these.
Download the form 1120 and instructions from the IRS home page. Only draft forms are available at this time at http://www.irs.gov/pub/irs-dft/
You MUST include a work paper that details any supporting calculations and comments about any issues you addressed. Consider this the same as a sheet you would provide to your supervisor at work whose task is to verify every item that you input on the return.
Also, assume on schedule J that the company is allowed a credit from form 3800 of $12,780.
Check figures: Schedule M-1 line 10 = 349,200, amount owed = 137