Calculation in pascal

Hey guys i have written a program calculating a bet,the program is working just fine but there is calculation regarding powers that gave me a little problem in pascal so i took the easy way out.the calculation is


Amount Won = ((bet ^2) / (bet^2 - 100 * bet)) * 25000

Bet is a variable


I just multiplied the variable each time in pascal not using the power function

also how would one right this is a pseudo-code ?

any input would be appreciated !!