var numBoats = 20;
var entryFee = 40;
var bf = 10;
var firstpl = .50;
var secondpl = .30;
var thirdpl = .20;
var clubexp = 20;
document.write("<table border='1' width='500'><tr><th># Boats</th><th>1st Place</th><th>2nd Place</th><th>3rd Place</th><th>Big Fish OTD</th><th>Club Expenses</th><tr>");
for (i=3;i<numBoats+1;i=i+.5)
{
  document.write("<tr><td align='center'>"+i+"</td><td align='right'>$"+i*entryFee*firstpl+"</td><td align='right'>$"+i*entryFee*secondpl+"</td><td align='right'>$"+i*entryFee*thirdpl+"</td><td align='right'>$"+(i*bf-clubexp)+"</td><td align='right'>$"+clubexp+"</td></tr>");
}
document.write("</table>");