How to i write this summation sine in applications

[Jiks_Devloper]

I am creating application about math question so i need to write this below image text how to i write it in my application.

Like this

[bodymindpower (Anke)]

This math term makes no sense at all.

[Jiks_Devloper]

Its summation sine

[George_Loungos]

Here is @Italo giving solutions since 2015
https://groups.google.com/forum/#!msg/mitappinventortest/iTt1u-cYGhc/4aHuGJ8ODAAJ

[juananton1991 (Juan Antonio)]

That’s
6+6+6+6+6+6…