My ta told me that if i want to count the length of a long variable I can create a method using modulos. From what I understood he was saying that i need to keep using modulos until the long is 0. Here's what I'm thinking right now, but i'm pretty lost. 

```
public static int inputSize(long cc_num)
{
  int count = 0;
  while( cc_num > 0) 
    {
     count += 1;
     cc_num = cc_num % 10;
    }
}

```