Code:

#!/bin/bash
#by GrouchyGaijin
# I called this script exrate.


echo "This script is for getting the current exchange rate "
read -p "Enter the symbol of the currency you want to convert from. Ex: SEK " var1
read -p "Enter the symbol of the currency you want to convert to. Ex: USD  " var2
read -p "Enter the amount you want to convert: " var3


wget -q -O - "http://www.google.com/finance/converter?a=$var3&from=$var1&to=$var2"|grep "<div id=currency_converter_result>"|sed 's/<[^>]*>//g'
until false; do
    echo "Press R to run the script again  or Q to quit. "
    read x
    if [ "$x" = "R" ]; then
    exrate
    elif [ "$x" = "Q" ]; then
        echo "Going down"
        killall exrate      
        break   
fi 
    done