A student has a credit card that calculates interest using the average daily balance method. The monthly interest rate is $3\mathrm{.}2\%$ of the average daily balance. The following transactions occurred during the July $1-31$ billing period.

$\backslash$table$[[$Transaction Description,Transaction Amount$],[$Previous balance. $$6260,],[$july $1,$Billing date $.,],[$Jly $5,$Payment,$$500$ credit.$],[$july $7,$Charge: Restaurant,$$30$