V <- c("7.20-<7.35","25-<32","60-<83e","40-<50","0.85-<1.15","80-<98","3.0-<3.4","NA","3.0-<3.4 (110)")
sub(".*<(\\d+(?:\\.\\d+)?).*", "\\1", V, perl=TRUE)
ViA8LSBjKCI3LjIwLTw3LjM1IiwiMjUtPDMyIiwiNjAtPDgzZSIsIjQwLTw1MCIsIjAuODUtPDEuMTUiLCI4MC08OTgiLCIzLjAtPDMuNCIsIk5BIiwiMy4wLTwzLjQgKDExMCkiKQpzdWIoIi4qPChcXGQrKD86XFwuXFxkKyk/KS4qIiwgIlxcMSIsIFYsIHBlcmw9VFJVRSk=