How would we represent the combustion of paper?

Well, paper is $\text{cellulose}$, i.e. ${\left({C}_{6} {H}_{10} {O}_{5}\right)}_{n}$
${\left({C}_{6} {H}_{10} {O}_{5}\right)}_{n} \left(s\right) + 6 n {O}_{2} \left(g\right) \rightarrow 6 n C {O}_{2} \left(g\right) + 5 n {H}_{2} O \left(l\right) + \Delta$
Is this stoichiometrically balanced......? What does the $\Delta$ symbol mean in this scenario?