Adding hyphens in contact form

Is there a way to have the contact us leads have the phone numbers come in this format 818-000-0000. Currently when we receive the email it comes in as 8180000000 unless the person requesting the information enters hyphens.

Some of our contact forms can be found here:
https://www.taxdefensepartners.com/contact/
https://www.taxdefensepartners.com/es-tax-resolution/

https://www.ads-software.com/plugins/contact-form-7/