Wordpress高级自定义字段 - 查找两个字段的数字平均值

I am using Advanced Custom Fields for Wordpress. I have two fields - 'Score One' and 'Score Two' which are text fields that allow the user to input a number.

In addition to showing these fields, I'd like to be able to get an average of the two numbers and show that as well.

For example...

<?php the_field('score_one'); ?>

Gives me....80

<?php the_field('score_two'); ?>

Gives me....60

How can I calculate the average of the above two scores on the front end and show that as a third number?

Any help appreciated.

echo (the_field('score_one') + the_field('score_two')/2 ;

pay attention that your value are not null nor something else than integer.