Pi to 50 trillion places using Swift

Use your choice of server-side Swift API and client-side apps in Swift on MacOS, iOS, iPadOS Search for number combinations like 777,777,777 is 24,658,601 decimal place and returns 21 numbers left and right of number searched, 9919408245759718530477777777724846769425931046864 and next repeats 777,777,777 at 1,136,093,224 decimal place 6887713302765877536177777777748642192032332926385 The problem is can't load numbers in the memory (files too big) any ideas how to do this? The search has to bridge 50 x 1Tb files Pi to 50 trillion places files can be download in trillion units Google "Pi to 50 trillion places" and "Happy Pi day" Interested in setting up a low cost yearly subscription service. If you want commission for every App download we can talk