hi everybody! i would like to convert this excel formula to javascript for adobe acrobat

=IF(CM2<600;0;(CM2-600)*0,16)

cm2 is named "SUMA3" and the result box is called "SUMA4"
the condition is that if "SUMA3" is lower than 600 then "SUMA4" its zero (0)
if "SUMA4" is higher than 600 then from that total is deduct 600 and the result is multiply with 0.16

thank you in advance