How do i write to get to decimals in the line with results? It calculates right but I want 2 decimals as the result.

<script>
            function divideBy() 
            { 
                    num1 = document.getElementById("odds").value;
                    num2 = document.getElementById("gameNumber").value;
                    num3 = document.getElementById("standardBet").value;
            document.getElementById("result").innerHTML = ((num3 * num2)*1.9) / num1;
            }
 </script>