Simple code for simple recaptcha

I’m a newbie to WordPress, trying to get Google’s recaptcha working with ContactForm7.
I have my google site and secret keys, and they are integrated.

What, exactly, do I put into the contact form, and where?
I’ve tried various methods and none work.
I tried to find the answer in this forum but all the posts seem to be dealing with code outside the form itself, which is quite honestly above my level.

My form is exceedingly simple:
=====
<div class=”form-field”><label>
<div class=”form-label-left”>Message<span class=”form-required”>*</span></div>
<div class=”form-input-right”>[textarea* your-message]</div>
</label></div>
<div class=”form-field”><label>
<div class=”form-label-left”>Your Name<span class=”form-required”>*</span></div>
<div class=”form-input-right”>[text* your-name]</div>
</label></div>
<div class=”form-field”><label>
<div class=”form-label-left”>E-Mail<span class=”form-required”>*</span></div>
<div class=”form-input-right”>[email* your-email]</div>
</label></div>
<div class=”form-field”><label>
<div class=”form-label-left”>Address</div>
<div class=”form-input-right”>[text your-address]</div>
</label></div>

<div class=”form-field”><label>
<div class=”form-label-left”>Phone</div>
<div class=”form-input-right”>[text your-phone]</div>
</label></div>

<div class=”form-field”><label>
<div class=”form-label-left”>File</div>
<div class=”form-input-right”>[file your-file limit:20mb]</div>
</label></div>

<div class=”form-field”><label>
<div class=”form-label-left”></div>
<div class=”form-input-right”>[submit “Send”]</div>
</label></div>
=====

I’d appreciate any assistance you may be able to offer.

Thanks.