[ (2((109))^(-1)(10^((109)-1) -1)), (2((389))^(-1)(10^((389)-1) -1)), (2((769))^(-1)(10^((769)-1) -1)), (2((929))^(-1)(10^((929)-1) -1)) ] mod360

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.