I am doing python tutorials in bash, call me crazy

odd.sh

 #!/usr/bin/env bash
 #----- Functions -----
 divide() {
         echo $(( $(($1 * 100)) / $2))
 }
 
 multipleOfFour() {
         result=$(divide $1 2)
         [[ ${result#*0} == *0* ]]
 }
 
 even() {
         result=$(divide $1 4)
         [[ ${result#*0} == *0* ]]
 }
 
 checkResultIsEven() {
         result=$(divide $1 $2)
         if even $result; then
                 echo Dividation resulted in an even number
         else
                 echo Dividation resulted in an uneven number
         fi
 }
 
 #----- application logic -----
while true; do
         echo enter a number
         read number
         if multipleOfFour $number; then # Exercise 2
                 echo your number is a multiple of four
         elif even $number; then # Exercise 1
                 echo your number is even
         else    
                 echo Your number is uneven
         fi      
         # Exercise 3
         echo enter two numbers, one to check, one to divide by, in that order
         read num1 num2
         checkResultIsEven $num1 $num2
 done                                 

Made this inspired by this python tutorial http://www.practicepython.org/exercise/2014/02/05/02-odd-or-even.html