Multiply the original price with the percentage.
Change the percentage to decimal
24% = 24/100 = 0.24
703 x 0.24 = 168.72
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Because the sales price is $703, and you are looking for the regular, add the percentage found to the original.
703 + 168.72 = 871.72
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$871.72 is your regular price.
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hope this helps