Issue calculating GST

Issue calculating GST

Hi, I encountered an issue when calculating GST(10%). 
The amount inc GST is $823.69
So the Total taxable amount should be $748.8091, round to $748.81
And the GST should be $74.88
Instead, Zoho books round the total taxable amount to $748.80, making the GST $74.89
I am not sure what I need to do to make this correct, please help!