handle comma-version of numbers by treating as real or integer if no

e.g.

This is a major issue when, e.g., some ML model would treat these numbers as strings as that would be much less effective as a feature.

AAJB_EXCL_EXPT_REV_AMT
--- ----------------------
102 349.64981
103 893.31777
104 1,163.74
105 4,343.98
106 675.4626
107 2,694.74
108 1,542.25
109 1,167.18
110 7,061.38
111 4,057.50
112 5,002.41
113 4,502.57
114 665.80279
115 1,888.72
116 199.42748
117 89.74835
118 9,071.81
119 7,062.89
120 1,474.93
121 3,475.52
122 1,921.22
123 6,665.53
124 632.26082
125 2,862.13
126 418.6887
127 1,230.07
128 13,086.11
129 8,328.64
130 4,306.78
131 2,144.28