Add an amount to wages if Overtime worked, but show zero if there is no overtime

If overtime is worked then it is the overtime rate plus 10% of the hourly rate. I have put a column in the spreadsheet for the 10% amount and I have tried to add it on but when there are no entries in the spreadsheet it is showing the 10% amount still.
Is there a simple solution to that to show zero if there is no overtime amounts?

Spreadsheet has calculation as follows to calculate Normal, Time 1/2 & Double Time

=SUM(AE13*B13)+(AF13*B13*1.5)+(AG13*B13*2)

For Time and 1/2 and Double time I need it to add 10% of normal wage amount - eg: $17.30 is hourly so $1.73 needs to be added to the Overtime payments total.
When I try to add it on it always shows the amount of $1.73 in the column even when there is no overtime.

Any help would be much appreciated.

Thank you for your response and the welcome.
The formula is not quite working out. I have 3 calculation columns as per below. If a person works 10 hours in the day and they are casual then I need to add 25% to their Normal base rate for casual loading, then for all overtime hours 10% is added to that hourly figure.
If the Base rate is $17.30 then the formula should add up to $234.24

Normal Time 1/2 Double
7.6 2.00 0.4

I think I may have to put the amounts of each into their own column and reference them when multiplying the hours.
Let me know if you think there is a better way.

Thanks

Thank you for your help but I will just have the total cell get the values from a hidden cell that has the proper amount in it.