Question: How to make Maple show variable values in calculation?

I'm not quite sure how I should put this and the title might be a bit misleading. Basicly when I use variables which I have defined with a value I would like for the equation to be shown with the values of the variables before the results. Not sure if that made sense so I made this picture.

Basicly when I write as in line (1) it just gives me the result, which is fine but I'd like it converted too if that makes any sense as in line (2). I made line (2) myself (just changed the colour of standard mathtype). I'd like the calculations to be shown as in line (2) where first you see the formula: lambda=v/f, then it inserts the values of the variables and finally calculates this. Is there any way to do this?

I couldn't really find anything in the manual or using google.

Regards, Simon