Is there a direct way to calculate this problem. I found the answer of $667 by working out 25% of $500 = $125, then I worked out 25% of $125 which = $31.25 and added 125 +31.25 to 500 which = $656.25 but when $656.25 has 25% deducted the remainder is $492.18, still not $500 so then I kept guessing until I arrived at $667 to obtain $500.25 after 25% has been deducted. Is there an easier way?