The following information pertains to the bank reconciliation as of January $31$ for Greis Company:

Unadjusted bank balance $ $19,400$

Bank collection of a note receivable $($no interest$)$: $2,250$

Bank service charge: $110$

Deposit in transit: $4,100$

NSF check returned by the bank: $1,900$

Outstanding checks: $6,100$

In addition, the reconciliation revealed one error: Check $2146$ for $$202,$ written to pay utilities expense, was incorrectly recorded in the books for $$175.$

Required:

Using the above information, determine the unadjusted book balance for cash.