I keep getting an error message (NUM#) when I'm trying to use the IRR
function for a series of cash flows.

The cash flows a
-$450,000.00
-$70,107.78
-$10,107.78
-$10,107.78
$531.81
$870.43
$2,304.77
$4,236.44
$2,725.67
$1,170.24

I'm entering a guess but still get an error. Can anyone give me some pointers?

Thanks in advance