Rear Axle Ratio

[Saskwatch]

Would you help me decipher /confirm what these numbers mean the rear axle ratio is on this differential, please. 
A  37

1  44

 Thank you 👍

[Plymouthy Adams]

if you look at the numbers in terms of metric system it turns out to be a 3.9 axle 

[Saskwatch]

Thank you very much I appreciate it !👍