Pleas help me with this puzzle (circles placed in grid)

[MisterSteve124]

ok I have this puzzle for math that I need to solve. I tried it several times and cannot find the right answer. If one of you can help me please reply.The directions are Without moving the existing circle add seven more to the unshaded squares ensuring that no circle is in line with another either horizontally, vertically or diagonally. Again if any of you can help me I will greatly appreciate it. Thanks

Heres the puzzle:

 

[tkhunny]

Six doesn't look all that tough, but I'm not seeing seven.