$\backslash$table$[[$Date$,$Transaction,$\backslash$table$[[$Transaction$],[$amount$]],\backslash$table$[[$Unpaid$],[$balance$]],$Number of days at that balance,$],[$August $1,$Beginning balance,$$1500\mathrm{.}25,$$$1500\mathrm{.}25,9$ days $($from August $1$ through August $9),$$$13,502\mathrm{.}25$