Calculate ERA for 52 Innings Pitched

What's the Earned Run Average (ERA) of a pitcher who throws 52 innings? Just enter the runs allowed and hit the calculate button.
Innings
Runs
ERA is the number of earned runs allowed per nine innings pitched.
If a pitcher allows 15 runs in 52 innings:
ERA = 2.60
ERA for 52 Innings Pitched
Based on runs allowed
Earned Runs ERA
1 0.17
2 0.35
3 0.52
4 0.69
5 0.87
6 1.04
7 1.21
8 1.38
9 1.56
10 1.73
11 1.90
12 2.08
13 2.25
Earned Runs ERA
14 2.42
15 2.60
16 2.77
17 2.94
18 3.12
19 3.29
20 3.46
21 3.63
22 3.81
23 3.98
24 4.15
25 4.33
26 4.50
Earned Runs ERA
27 4.67
28 4.85
29 5.02
30 5.19
31 5.37
32 5.54
33 5.71
34 5.88
35 6.06
36 6.23
37 6.40
38 6.58
39 6.75
Earned Runs ERA
40 6.92
41 7.10
42 7.27
43 7.44
44 7.62
45 7.79
46 7.96
47 8.13
48 8.31
49 8.48
50 8.65
51 8.83
52 9.00