Hello,
Please, add following code in your custom.css #price_calculator {float: left;}
Watch video how to create and use custom.css https://www.youtube.com/watch?v=Qok2zRedRMY
Also, please, delete \legenda\woocommerce\single-product\review.php and legenda\woocommerce\order\ folder, these are old files from previous version which are unnecessary.
Regards