f
i
r
s
t
n
u
m
b
e
r
1
2
5
C
X
X
V
s
e
c
o
n
d
n
u
m
b
e
r
8
V
I
I
I
a
d
d
s
u
b
t
r
a
c
t
m
u
l
t
i
p
l
y
d
i
v
i
d
e
b
a
s
e
1
0
1
2
5
×
8
=
1
0
0
0
R
o
m
a
n
C
X
X
V
×
V
I
I
I
=
M