3 Tigda Kam Bigda

You have three magical numbers $A$, $B$, $C$. Your task is to make $A$ as $1$ by dividing with any combination of $B$ and $C$ but note that you can divide any number $P$ by $Q$ if and only if $P$ is divisible by $Q$ and you can perform any number of operations you want. Note : Its not necessary to use both B and C always you can use either B or either C or use both in any order and any number o