How to do sum of displayed numbers on webpage in module 13

My Scenario

"Go to:
http://www.americangolf.co.uk/golf-clubs/fairway-woods"
Print every link under brand
Every link will have a number in front of it
Find sum of all numbers
Total number of products found is written on the page-"49 Products found"
Verify sum s equal to number of products mentioned

My code:


public static void main(String[] args) {
WebDriver driver = new FirefoxDriver();
driver.get("http://www.americangolf.co.uk/golf-clubs/fairway-woods");
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
List<WebElement> elem = driver.findElements(By.xpath("//div[@id='secondary']/div[1]/div[3]/div/ul/li/a"));
for(WebElement li:elem)
{
System.out.println(li.getText());
}

List<WebElement> elem1 = driver.findElements(By.xpath("//div[@id='secondary']/div[1]/div[3]/div/ul/li/a/span[2]"));

for(WebElement li1:elem1)
{
System.out.println(li1.getText());



}



int con= Integer.parseInt(driver.findElement(By.xpath("//div[@id='secondary']/div[1]/div[3]/div/ul/li/a/span[2]")).getText().replace("(","").replace(")",""));




for(int i=0;i<=elem1.size();i++)
{

int sum = i+con;
System.out.println("Total is:"+sum);
}
}
}

but i am not able to do sum of numbers instead of adding numbers it is printing like below

Total is:10
Total is:11
Total is:12
Total is:13
Total is:14
Total is:15
Total is:16
Total is:17
Total is:18
Total is:19
Total is:20

please tell me where i am going wrong.