I do not know how to multiply

I have 994 cells in a column. I want to multiply the number in each one by a specific number, call it X.
I have never used a formula in a spreadsheet before. I assumed the Fx "Product" was a good choice, I typed = into the first cell in the column, inserted PRODUCT and then typed (C), which is the column heading and then X) So in the formula bar I had: "=PRODUCT(C,X)" and every time I get a red arrow in that cell stating that "This formula can't reference its own cell, or depend on another formula that references this cell."
I have tried to use other cells, same problem, I tried an empty cell at the top and bottom of the column, I tried using the name of the column instead of the letter. I tried using the operator as in (C*X). I also tried using (C1:C994, X) In short I have tried everything I can find in the manuals re: how to do this and it may be real elementary but apparently I cannot get it to work.
And I lied, I do know how to multiply, I was just hoping to not have to multiply all 994 cells myself one at a time, Can someone please help. Thanx.

DrSpock wrote:
I have 994 cells in a column. I want to multiply the number in each one by a specific number, call it X.
I have never used a formula in a spreadsheet before. I assumed the Fx "Product" was a good choice, I typed = into the first cell in the column, inserted PRODUCT and then typed (C), which is the column heading and then X) So in the formula bar I had: "=PRODUCT(C,X)" and every time I get a red arrow in that cell stating that "This formula can't reference its own cell, or depend on another formula that references this cell."
Hi DrSpock,
I'm guessing you entered the formula into column C. Placed in C5, for example, it says "multiply the number in C5 by the number in X5 and put the product in C5. The formula won't work as it tries to use the 'number' (actually, the result of a formula) in C5 as a factor used to produce the number in C5.
=PRODUCT(C,X) can be placed into any column except C or X, and will give the product of the numbers in column C and column X in the row containing the formula. Placed in column M, it will give the results shown for the data entered in columns C and X:
C ... M ... X
1 ... 5 ... 5
5 ...10 ... 2
3 ... 9 ... 3
For simple multiplication of two values, using the multiplcation operator ( * ), as Badunit suggested, is the simpler route.
Regards,
Barry

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