Can anyone explain where did the pmt (50) come from ? how did we get it ? I get everything else except this part

Consider a bond with a coupon rate of 10% and coupons paid semi-annually. The par value is $1000 and the bond has 5 years to maturity. The yield to maturity is 11%. What is the value of the bond? I=11%/2=0.055 (for semi-annual N=5*2=10 Coupon payment (coupon rate *1000)/2 (for semi annual) = (1 + i) Bond Value = pmt 10 (1+0.055) 0 0.055 Bond Value = 50 + F (1 + i) N 1000 (1 + 0.055)