STAAD Foundation Isolated Footing Net Pressures

Hello,

I am trying to verify the calculation sheet I have obtained from STAAD Foundation. Based on my hand calculation, the net corner pressures of the isolated footing is 213.28KPa. However, the software computed it to be 216.882 (see attached PDF file). My hand calculation solution is shown below:

Length = Width = 4.05m

Axial load for Loading Combination #3 = 3500kN

Pressure = 3500kN / (4.05m)^2 = 213.28kPa

Why is there a discrepancy? Is there something wrong with my software settings or hand calculation?

Query on Net Pressure - Isolated Footing.pdf