First o all to use provided calculator I need to confirm that static compliance at 35 micron/Nm given in Frog specs transtale into 17.5 micron/Nm dynamic compliance @ 10Hz. If this is true the calculated resonant frequency is 6.98Hz so at the lower edge of the rang.
I believe european standard is the only one that you do not have to divide or multiply. Japanese multiply by 1,5-2 and US divide static by 2.