Suppose on January $15,2018,$ the U$.$S$.$ Treasury issued a ten$-$year inflation indexed note with a coupon of $4\%.$ On the date of issue, the CPI $($consumer price index$)$ was $221.$ By January $15,2028,$ the CPI index had decreased to $171.$ What principal and coupon payment was made on January $15,2028?($Note: U$.$S$.$ Treasury pays semi$-$annual coupons$)$

The CPI index deppreciated by $($Round to five decimal places.$)$

The principal payment is $ $($Round to the nearest cent.$)$

The coupon payment is $ $($Round to the nearest cent.$)$