I'm not sure I agree with your first sentence; if the integer increments once every 10ms then the value of 5000 should mean 50,000ms.

Breaking your equation down:

timesquared = time ^ 2 (assuming you mean time squared?)

interimtime = timesquared * 9.8

h = interimtime / 8

so if time = 500

timesquared = 250,000

interimtime = 2,450,000

h = 306,250

Is h now the height in micrometers (i.e. 0.3 metres)?

Assuming that is correct then just divide by 1000000 and put to the display.

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