How to Store multiple results in firebase without deleting previous ones

[What_The]

I got to the point of entering data in firebase, but I overwritten the value that is, how can I store the data that is entered without deleting the previous ones?

[Still-learning (1-2-3-4...)]

try to use

Or store the present value in a variable, and add the new value to the same value and save the variable into the firebase