Floating point - please enlighten me!

[cncmachineguy]

The true formula is

result=adc10((adc10*.00034)+.2235) 'where adc10 in the pic 10 analog register

To be within 1% of the true tempature

Thanks

so plugging in extremes:
adc10=1 gives us
result=1((1*.00034)+.2235)=1(.00034+.2235)=1(.2238 4)=.22384
adc10=1023 gives us
result=1023((1023*.00034)+.2235)=1023(.34782+.2235 )=1023(.57132)=584.46036

Is this correct? Seems like quite a lot of work to scale an answer. what temps do the extremes represent?