Hannah Varitek, a medical doctor, opened a medical practice. The business completed the following transactions:

May $1$Varitek invested $$23,000$ cash to start her medical practice. The business issued ordinary shares to Varitek.

$1$Purchased medical supplies on account totaling $$8,400.$

$2$Paid monthly office rent of $$6,000.$

$3$Recorded $$13,000$ revenue for service rendered to patients, received cash of $$4,500,$ and sent bills to patients for the remainder.

After these transactions, how much cash does the business have to work with? Use a T$-$account to show your answer. $($Leave unused cells blank.$)$