Suppose you roll a standard 6-sided die. If you roll a 1 (1), you randomly select one chip from a bowl containing 2 red (R) and 3 white (W) chips. If you don't roll a 1 (1c), you randomly select 1 chip from a bowl containing 7 red (R) and 3 white (W) chips. What is the probability of obtaining a white chip?