Multiply times with numbers

I need a formula please to calculate total payment per hour and minutes as follows:

1 working hour worth 150, with minimum payment of 450.

I have total working hours and minutes [h]:mm] in cell A1.

Put this in B1:

=MAX(450,150*A1*24)

Hope this helps.

Pete

Yes it did, however is there a way please to modify the given formula to reflect zero if the time value in cell A1 is negative value?

Wow, Ace - that was quick. I came to reply after getting the email notification and saw that you had already done so.

Pete