Find the sum of all positive integers $n$ such that $1.2n-4.4<5.2$.
1.2n-4.4<5.2 add 4.4 to both sides
1.2n < 9.6 divide both sides by 1.2
n < 8
7+6 + 5 +4 +3 + 2+1 = .........
+334 
+36916 
