[Slakah]

local registers = {
    {value1 = 1, value2 = 3},
    {value1 = 1, value2 = 100},
    {value1 = 1, value2 = 365}
}
 
local total_value1, total_value2 = 0, 0
for regnum, register in pairs(registers) do
    total_value1 = total_value1 + register.value1
    total_value2 = total_value2 + register.value2
end
 
print("The total of value1 is", total_value1, "The total of value2 is", total_value2)

Would output "The total of value1 is 3 The total of value2 is 468"

As a quick example.