A borrower obtains an Interest$-$Only $($IO$)2642$ mortgage as a $30-$year, monthly payment, fixed rate loan and with $3\%$ interest. What is their regularly scheduled monthly payment? Write the answer as a number rounded to two decimals $($e$.$g$.$ if you get $$50\mathrm{.}66666,$ write $50\mathrm{.}67).$