There is no "out-of-the-box" solution for pushing MemberMouse sales data into Google Analytics.
1. Follow the instructions in this Google article to enable eCommerce tracking:
https://support.google.com/analytics/answer/1009612?hl=en#Enable
2. When you've set everything up that Google needs, you'll add a tracking code to the confirmation page where you want the tracking to happen as described in this Google article:
https://support.google.com/tagmanager/answer/6107169
3. You'll replace the hard-coded data with order data SmartTags as follows:
<script> window.dataLayer = window.dataLayer || [] dataLayer.push({ 'transactionId': '[MM_Order_Data name="id"]', 'transactionAffiliation': 'Your Site Name', 'transactionTotal': [MM_Order_Data name="total"], 'transactionTax': 0.00, 'transactionShipping': [MM_Order_Data name="shipping"], 'transactionProducts': [{ 'sku': '', 'name': '[MM_Order_Data name="productName"]', 'category': '', 'price': [MM_Order_Data name="subtotal"], 'quantity': 1 }] }); </script>