can someone help me i'm new to flutter, i want to get the sum of all the COST variable and that has a marked "RENTED", in firebase and show the result in a TEXT WIDGET
example:
[in firebase] name: unit1 payment: 1000 Status: Rented
name: unit2 payment: 2000 Status: Rented
name: unit3 payment: 3000 Status: Available
output:
[text widget] total rented: 3000
what is the custom code for the text widget so that i can display the sum?
i've tried to search for solution on youtube and fb but i can't find an exact solution
