Multiplying and Division in Macro

So I am pretty sure there are already other topics about this, but I am new to the world of macro. (Like 0 experience with other code languages before). I am playing some pathfinder and I want to have an Arrow of Law wrote as a Macro.  What it does: Against Chaotic Non-Outsider, it deals 1d8x1/2 caster level (max 5d8) / Against Chaotic Outsider, it deals 1d6xcaster level (max 10d6) So I am guessing that we will be using the Dh and (). Can anyone explain to me how it's done?  In the past, I have succeeded to make a macro that does 1d8 + caster level damage max 5 for example, but never 1d8 x 1/2 caster level (max 5d8).  

Here's one way (fyi: attribute names and how you leverage these macros depend on the sheet you are using); vs Chaotic Non-Outsider = [[ [[ { [[ {floor(@{caster_level}/2),1}kh1 ]], 5 }kl1 ]]d8 ]] I nested grouping rolls to compare two values.  Using the kh1 (keep high 1), you can ensure your 1/2 caster level can never go lower than 1.  floor rounds down decimals. Then I use the kl1 (keep low 1) to ensure it can never go higher than 5d6. vs Chaotic Outsider = [[ [[ {@{caster_level},10 }kl1 ]]d6 ]] using 10 here to cap at 10d6

Cool, I had to change @{caster_level} to @{level}. But it works! Thanks