jQuery if statement to check variable and assign value to selector element accordingly

I'm quite new to jquery.
I have a simple jquery function which takes the value from two html select inputs ( #number1 and #number 2), multiples the values together and assigned a string value to the DIV element (#total) according to what the calculated value(total) is.

Everything works fine except the if statements. I'm not too sure how best to do this in jquery?


 

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("#number1, #number2").change(function(){
    var cons = $("#number1").val() || 0;
    var likely = $("#number2").val() || 0;
    
    var total = (cons * likely)
      
    if ((total == "0"))
     { var result = "N/A";}
    else if ((total >= "1") && (total <= "2"))
     { var result = "Low";}
    else if ((total >= "3") && (total <= "4"))
     { var result = "Medium";}
    else if ((total >= "6") && (total <= "9"))
     { var result = "High";}
    else if ((total >= "12") && (total <= "16"))
     { var result = "Immediate";}    
       
    
    $("#total").html(result);    
    });
});



</script>';

echo '<form><table class="my-table">
    <thead>
        <tr>
            <td>Type</td>
            <td>Consequence</td>
            <td>Likelyhood</td>
            <td>Total</td>
        </tr>
    </thead>
    <tbody>
        <tr data-row-num="1">
        <td>Risk Self</td>
        <td><select id="number1">
              <option value="1">1</option>
              <option value="2">2</option>
              <option value="3">3</option>
             </select>   
        </td>
              <td><select id="number2">
              <option value="1">1</option>
              <option value="2">2</option>
              <option value="3">3</option>
             </select>   
        </td>
        <td><div id="total" /></td>
        </tr>
   </tbody>
</table>
</form>
      ';  

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