Write a program that generates a few rows $($up to $5)$ of multiplication table similar

to the following figure.

You are required to use variables and named constants. For example, you may use a variable

to represent row number and a named constant of string type for $1$ x $$ so that the first row $1$

x $1=1$ will be generated by output the named constant $(1$ x $),$ following the variable $(1),$

$=,$ and the multiplication result $1.$ The grid bars are optional.