I need a formula to do this:
say cell d17 has =D10*$D$7, i want the next cell e17 to be
=e10*$d$7+d10*$e$7 and the next cell f17 to be
f10*$d$7+e10*$e$7+d10*$f$7.....and so on so forth...... I dont want to type
the whole thing out in every cell...since the formula continues for about 100
more cells to the right


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