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help with fractions

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# 1  
Old 07-09-2008
help with fractions
Smilie
please can anyone help me with the thread below. I keep getting parse errors, illegal character M G R.this is a portion of the script:
ckk=.20
Ded=.10
basic_sal=90000
Allowances=echo "$chk" * "$basic_sal" | bc
Deductions=echo "$Ded" * "$basic_sal" | bc
echo "Gross_salary=`expr($basic_sal + $Allowances) - $Deductions` "
# 2  
Old 07-09-2008
Try:
Allowances=`echo $chk "*" $basic_sal | bc`

those are backquotes, not single quotes.
# 3  
Old 07-09-2008
Why don't use bc to the end?
Code:
ckk=.20
Ded=.10
basic_sal=90000
Allowances=`echo "$chk * $basic_sal" | bc`
Deductions=`echo "$Ded * $basic_sal" | bc`
echo Gross_salary=`echo $basic_sal + $Allowances - $Deductions | bc`

always check for typo.
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