Bronn takes out an interest$-$only $($zero amortizing$),5/1$ hybrid, adjustable rate mortgage of $$212,000$ with $13-$year maturity. The index is SOFR and the margin is $1\mathrm{.}5\%.$

It is expected that SOFR at the end of the $5$th year will be $1\mathrm{.}75\%$ p$.$a$.$ compounded monthly.

His mortgage payment for the $63$th month equals $ $\_\_\_\_\_\_\_$