Answer:
Let's call the regular price "x".
Since the sale price is 27% less than the regular price, we can set up the equation:
Sale price = x - (27% of x)
We know the sale price is $657, so:
657 = x - (0.27x)
Simplify the equation:
657 = 0.73x
Divide both sides by 0.73:
x = 900
So, the regular price is $900.