lambda with floats

[monkeys paw]

I have the following acre meter which works for integers,
how do i convert this to float? I tried

return float ((208.0 * 208.0) * n)

 >>> def s(n):
... 	return lambda x: (208 * 208) * n
...
 >>> f = s(1)
 >>> f(1)
43264
 >>> 208 * 208
43264
 >>> f(.25)
43264