local total, evens, has_nine = 0, 0, false
for i = 1, 20 do
    total = total + i
    if i % 2 == 0 then evens = evens + 1 end
    if i % 9 == 0 then has_nine = true end
end
print("total", total)
print("evens", evens)
print("divisible by 9", has_nine)