Why does this TextButton's position on the X Axis print INF?

sizemax = 0.6 size = 0.12 count = 1 -- it is a loop that goes through a table of 5 things, so it goes to 5

--tb is a textbutton

tb.Position = UDim2.new((sizemax/2)+(size*count),0,1-0.05,0)