Oops. Ok. I store the data (column D onwards) into the array because I need to calculate the ratio between each rows. So I store into two arrays such that I can take 1st array/2nd array. 
_Input DATA_
A    B    C    D    E    F    G    H
M11 0.1   10   24  56   77   98   72
M12 0.3   13   44  23   45   56   11
M13 0.4   54   23  11   25   67   91

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Store values from D to H into $arr_ref1 ( @full_data ) and $arr_ref2 ( @full_data ) and divide from there: 
_INPUT DATA_
 D    E    F    G    H
 24  56   77   98   72
 44  23   45   56   11
 23  11   25   67   91

_OUTPUT DATA_

1    1    1    1    1
1.83 0.41 0.58 0.57 0.15
0.95 0.19 0.32 0.68 1.26

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I hope my explanation is ok. :)

In reply to Re^8: How to store the output from foreach loop into variable/array without printing? by hellohello1
in thread How to store the output from foreach loop into variable/array without printing? by hellohello1

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