George secured an adjustable$-$rate mortgage $($ARM$)$ loan to help finance the purchase of his home $5$ years ago. The amount of the loan was $$350,000$ for a term of $30$ years, with interest at the rate of $9\%/$year compounded monthly. Currently, the interest rate for his ARM is $3\mathrm{.}5\%/$year compounded monthly, and George's monthly payments are due to be reset. What will be the new monthly payment?