Gst turnover with Income Tax turnover

Will  you please elaborate  non GST supply  15,00,000/-?. ( source of income ) 

Dear Sir reason for not showing sales in Gstr-3B Return because this is not gst Sales. Sir i want to know that in this case this rs. 15,00,000 will be show where in ITR-4.

Sir I am attaching P&L Account for example a firm is registred under GST and the Turnover of GST is NIL.

Sir i am totally confused about the turnover.

SIR MY ANOTHER QUESTION IS IF PURCHASE IS MORE THAN SALES FROM RS. 3,00,000 THAN WHAT ITEM I WILL ADD IN CREDIT SIDE OF P&L ACCOUNT FOR CALCULATING GROSS PROFIT.

DEAR SIR MY LAST QUERY PLEASE IF I WANT TO SHOW NET PROFIT RS. 3,78,624 IF MY SALES AND PURCHASE ACCORDING TO GST. SALES RS. 28,34,188 AND PURCHASES RS. 28,81,066 BOTH ARE GENUINE. I AM ENCLOSING EXAMPLE SHEET HEREWITH.

THANKS.