m=1000 L=50 x=10 V=5 I=1 Soo MXXX=1030 BUT FOR 1040 you do 1050-10 ie MXL (the lower value numeral before a high one mean subtract from the next one), therefore at 11049(MXLIX) it become ML 1050. Please learn how to count in Roman numerals before doing so 😛
ie
I=1
II=2
III=3
IV=4
V=5
VI=6
VII=7
VIII=8
IX=9
AND X=10
so your ???? = MLIV 1050-1+5
Then this one it MLV 😛