This is my homework to write calculator on shell script but there is two errors and I couldn't find the solutions. Can you help me?echo ---------Welcome to Simple Calculator--------echo p=PLUSecho m=MINUSecho x=MULTIPLICATIONecho d=DIVISIONread -p Enter your choice chif $ch -eq pthen    echo Enter Two Number For PLUS    read x    read y    echo Sonu:  $((x+y))elif $ch -eq mthen    echo Enter Two Number For MINUS    read x    read y    echo Sonu: $((x-y))elif $ch -eq xthen    echo Enter Two Number For  MULTIPLICATION    read x    read y    echo Sonu: $((x\*y))elif $ch -eq dthen    echo Enter Two Number For DIVISION    read x    read y    echo scale=2;x/y | bcelse    echo Stopping calculatorfi
[line 35 unexpected EOF while looking for matching '  ' and line 40 unexpected end of file]
linux;syntax