Round down values in string {{aggregate_rating}}

Hi there,

I am displaying {{aggregate_rating}} in my front end, however it is round to 14 decimal places. Which looks something like this: 7.52064393939394.

How can I make this round to 2 decimal places like this: 7.52?

Thanks btw for the awesome plugin!

https://wordpress.org/plugins/wp-customer-reviews/