WOLFRAM
|
DEMONSTRATIONS PROJECT
L
o
n
g
M
u
l
t
i
p
l
i
c
a
t
i
o
n
f
i
r
s
t
n
u
m
b
e
r
s
e
c
o
n
d
n
u
m
b
e
r
1
2
3
4
×
4
3
2
1
1
2
3
4
2
4
6
8
0
3
7
0
2
0
0
+
4
9
3
6
0
0
0
5
3
3
2
1
1
4
S
e
e
l
o
n
g
m
u
l
t
i
p
l
i
c
a
t
i
o
n
p
r
o
b
l
e
m
s
w
o
r
k
e
d
o
u
t
s
t
e
p
-
b
y
-
s
t
e
p
.
