I'm a little confused, I know how to get input form a user but how do I use it as a variable for a loop?

What I need to is ask for a number and if its 6 it will output 6, 12, 18..and so on and if its 7 it will output 7, 14, 21...etc or whatever number they put in, all the way to 150.

I've tried a few things and normally would ask but I'm getting frustrated,

any help you can offer would be appreciated.

Thanks,

extro