Presumably you mean 4.7.65 in which case the answer is IV.VII.LXV
It is: 65 = LXV
L=50, X=10 and V=5. So LXV=65.
65
LXV
65 = LXV
LXV
LXV = 50+10+5
The Roman numerals for 64 are ILXV (65-1) or LXIIII (64) and they are not LXIV. So your question is: What is the cube root of LXIIII in Arabic numerals? The answer is 4 which is IIII or IV in Roman numerals.
65% of 47 = 65% * 47 = 0.65 * 47 = 30.55
47/65 = 47 ÷ 65 = 0.723077
The number is 65. L = 50 X = 10 V = 5
It can be simplified to LV which is 55 because XLXV means -10+65 = 55