Dravid walks off, sad but proud
Time Limit: 1 sec
The Problem
Rahul Dravid's retirement from international cricket was announced at his home ground, the Chinnaswamy Stadium, in a function room filled with more than 200 people. Family, teammates, friends, KSCA members, officials and journalists had gathered  as did fans watching a live broadcast on national television  to mark the end of a remarkable career and a "reassuring presence" in the Indian team.
Batting and fielding averages

Mat 
Inns 
NO 
Runs 
HS 
Ave 
BF 
SR 
100 
50 
4s 
6s 
Ct 
St 
Tests 
164 
286 
32 
13288 
270 
52.31 
31258 
42.51 
36 
63 
1654 
21 
210 
0 
ODIs 
344 
318 
40 
10889 
153 
39.17 
15284 
71.24 
12 
83 
950 
42 
196 
14 
T20Is 
1 
1 
0 
31 
31 
31.00 
21 
147.61 
0 
0 
0 
3 
0 
0 
Firstclass 
298 
497 
67 
23794 
270 
55.33 


68 
117 


353 
1 
List A 
449 
416 
55 
15271 
153 
42.30 


21 
112 


233 
17 
Twenty20 
69 
62 
6 
1605 
75* 
28.66 
1369 
117.23 
0 
7 
178 
25 
14 
0 
In this problem when you know the Rahul’s number of innings (I), number of not out (N) and total run(R) then you can easily calculate the average run of his career.
The Input
Input file contain a series of line, each line contain 3 integer denotes I, N, and R (1<=I<=497, 0<=N<=67, and 0<=R<=23794). Where I, N, and R denote the number of Innings, number of Not out, and total Run respectively.
The Output
For each line of input you have to print the average run rounded to two decimal digits in a line.
Sample Input
286 32 13288
1 0 31
Sample Output
52.31
31.00
Problem Setter: Shahin ShamS