Answers

2014-07-01T20:10:19+08:00
1. 1455
2. 87
3. 2700
4. 450
5. 2999
0
2014-07-01T20:10:40+08:00
1 MCDXV 1,415
2 LXXXVII 87
3 MMDCC 2,700
4 CDL 450
5 MMCMXCIX 2,999

I don't exactly remember the numerals, so it won't be the most accurate answer you'll get. :D
0
1 MCDXV 1,415
2 LXXXVII 87
3 MMDCC 2,700
4 CDL 450
5 MMCMXCIX 2,999
Wait, were you trying to copy me?
of course not. .