MySQL - reduce column value by 1/4

Hi,
I have the following values in my MySQL table "items" with column "itemPrice" containing:

13.75

8.58,8.58,8.58,8.58,9.02,9.02,9.02,9.02

319.00

25.24,25.24,25.24,25.24,27.39,27.39,27.39,27.39,29.47,29.47,29.47,29.47

22.18

Some have multiple prices.
I need a way to reduce all prices by 1/4, is there a way I can multiply all prices by 0.75 ?

Thanks in advance
sabecsAsked:
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Brian TaoSenior Business Solutions ConsultantCommented:
Not possible with those multiple prices.  You will need to use a programming language to retrieve the column, split the values, multiply the values by 0.75, join them back into string, and then update them back into the table.
My suggestion is that you should re-design your table schema if possible, so that no column contains multiple values.

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sabecsAuthor Commented:
Thanks for your comments, much appreciated.
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