# How to solve multiplication alphametics?

I am referring to puzzles like these, where every letter represents a unique number (0-9):

    ERGO       MAD       LYNDON
*   SUM   *   MAN      *     B
-------   -------      -------
COGITO    ASYLUM      JOHNSON


Are there any useful tips for solving these? In similar addition alphametics, you usually have to look for carry-on and you continue from there.

But what should I look for in multiplication alphametics? Should I write them as shown above and use long multiplication to solve this, or write them in a regular a * b = c format?

Right now I have no idea where to start - what to look for that could help me, and what technique I should use to continue solving this.

I am looking for tips because I'm clueless and couldn't find any info about how to solve puzzles like these. Any help is appreciated.

-