Please help me with this question!

5.2 The device is upgraded to require 8-character passwords. Each character could be lowercase letters, uppercase letters, numbers, or one of 38 special characters. The password has to have exactly 8 characters. Now Chuck attempts to find Bob's password with KU ITTC's Advanced Computing Facility (ACF), which is a computing cluster with 10,000 cores running at 4GHz. It takes 100 cycles (on one core) to generate a hash for a password. How much time on average will it take to find Bob's pin? FYI: you can use the following approximation: 1 year 30,000,000 seconds; 1G1,000,000,000;2101,000;2201,000,000;2301,000,000,000