Trying to divide a tow numbers keep getting Dividebyzero error : Ok so here is my problem, i have this code 
[please open picture][1]


ok so here is my problem. I have a hotel that can only accept 6 adults per room. the adults are (inTotal) and now i am trying to divide the number of rooms by how many adults i have to get a ratio, then if the ratio  is bigger than 1/6 i am trying to show that message box demanding they enter an amount where no more than six people can be in one room, but keep getting the dividebyzeroexception error. Anyother ways of having such ratio or how do i solve this please 


  [1]: https://i.stack.imgur.com/9GFjJ.png