Lightroom Desktop: Option to set specific numeric aspect ratio in cropping panel?

I want to use 2:39 : 1 or 65:24 ratio in Lightroom but only way to do this is to eye ball it using the custom window function. 

Are you serious?  How can a largest photo editing software not have custom aspect ratio tool? 

Please try to resolve this issue because I really enjoy the clean UI of cloud based lightroom over lightroom classic. 

It literally takes 5 lines of code. 

I beg you