If the adjustment toPrepaid Advertisinghad been $6,800 instead of $3,400, what net income would have resulted?

I need to know the answer to this question. I typed in $6800 and $3400 and it is still wrong. My beginning prepaid advertising amount was $20,400, it says if the adjustment to Prepaid Advertising had been $6,800 instead of $3,400, what net income would have resulted?