read from stdin
>, >, <<
convert atoi
+++++ +
[
 >----- ---
 >----- ---
 <<-
]
multiply two integers
>[
 >[>+>+<<-]
 >[<+>-]
 <<-
]
separate two digits inputed
>[-]>+> >+++++ +++++<
[
 - >- [>>>]+++++ +++++<<+
 [<<<]>>>>
]
<-
<+++++ +++++>>>[-<<<->>>]<<<
convert itoa
<+++++ +
[
 >+++++ +++>
 [+++++ +++>]
 <[<]>-
]
print with newline
>>[.<<]<[<<]>>.
>>,.

