[maxmsp] Addition in MaxMSP

Hi All,
      I am new to MaxMSP and have a question regarding basic Math.

I am trying to figure out a way to on the trigger of a Bang, add one (1) to a number box. Ideally if i push the Bang 5 times the number box will equal 5.

Any help or advice would be much appreciated and if i am posting in the wrong section i apologize in advanced.

Thanks,
Alex