There are 786 identical plastic chips numbered 1 through 786 in a box. What is the probability of reaching into the box and randomly drawing a chip number that is smaller than 527? Express your answer as a simplified fraction or a decimal rounded to four decimal places.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?