How to add an integer number and a float number in a bash shell script

Question

I have two numbers:

value1=686
value2=228.35

I am not able to add an integer and a float. Please help me out to get the result.

I a

Answer 1

 #!/bin/Bash
echo "Enter the two numbers to be added:"
read n1
read n2
answer=$(($n1+$n2))
echo $answer