528,2:139

It seems like you provided two numbers separated by a colon. To help you with the information you have provided, I can interpret it in a couple of ways:

1. As two separate numbers: 528 and 2

   • Their sum: 528 + 2 = 530
   • Their difference: 528 - 2 = 526
   • Their product: 528 * 2 = 1056
   • Their quotient (528 divided by 2): 528 / 2 = 264

2. As a ratio: 528:2

   • This can be simplified to 264:1

If you meant something different or have another question in mind, feel free to provide more context or details!