input x y and d separated by spaces
return d digits of x / y

>+++[[>]>+[->,[>+++++[<------>-]<--[>++++[<---->-]<<<[>++++++++++<-]>[<+>-]>[<<+
>>-]<+>]]<]<[<]>-]>[>>>+<<<-]+>>+[<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]+<<[->-[>+>>]>[[
-<+>]+>+>>]<<<<<]>[-]>->>>+>+<[>[-<-<<[->+>+<<]>[-<+>]>>]++++++++++>[-]+>[-]>[-]
>[-]<<<<<[->-[>+>>]>[[-<+>]+>+>>]<<<<<]>>-[-<<+>>]<[-]++++++++[-<++++++>]>>[-<<+
>>]<<]<[.[-]<]<[-]<[<<++++++++++>>-]<<<<<[>>>>+++++[<<<<+++++++++>>>>-]<<<<.[-]]
>>-]
