Unix and Shell Programming - Employee Salary Details

clear
echo "Employee Details"
echo "---------------------"
echo "Enter the emplyee name"
read name
echo "Enter the emplyee number"
read no
echo "Enter the designation"
read des
echo "Enter the basic pay""
read bpay
echo
hra='echo "$bpay*10/100"|bc'
da='expr $bpay*15/100|bc'
lic='expr $bpay*5/100|bc'
pf='expr $bpay*3/100|bc'
gp='echo "$hra+$da+$bpay"|bc'
np='echo "$gp-($lic+$pf)"|bc'
echo "Employee Details"
echo "---------------------"
echo "Employee Name:"$name
echo "Employee Number:"$no
echo "Designation:"$des
echo "Basic pay:"$bpay
echo "HRA:"$hra
echo "DA:"$da
echo "LIC:"$lic
echo "PF:"$pf
echo "Gross Pay:"$gp
echo "Net Pay:"$np

-------------
OUTPUT:
------------
Employee Details
---------------------
Enter the employee name
Ashok

Enter the employee number
13

Enter the designation
labour

Enter the basic pay
8000

Employee Details
---------------------
Employee Name: Ashok
Employee Number:13
Designation    :labour
Basic Pay      :8000
HRA             :800
DA               :1200
LIC               :400
PF                :240
Gross Pay      :10000
Net Pay          :9360