math(7)

3*W=102
3w=102
W=34
w*7=a
a=34*7
a=238

3Xw=102
3w=102
w=34

wX7=a
34*7=a
a=238

3w = 102
w = 34

7w = a
a = 238

3Xw=102
w = 102/3
w = 34

wX7 = a
w = 34
34X7 = a
a = 238