lstOfElements.get(0).sendKeys("120000");

WebElement t1 =  driver.findElements(By.xpath("//*[contains(@id,'input')]")).get(0);
t1.click();
JavascriptExecutor jse = (JavascriptExecutor)driver;
jse.executeScript("arguments[0].value='120000';", t1);

t1.sendKeys(Keys.NUMPAD1);