can you help me with the formulas because i dont know how they got the result.

Bonds Keywords: zero coupon bonds, substitution swap Q1 Bond XYZ 6 1/2 00 Cur yield 6.1 volume 300 Close 101 1/4 Net change + 3/8 $1,012.50 Closing cote The price 101 1/4 1012.5 or Verify? Annual interest $65.00 Verify? Q2 How much you should pay for a $10,000 Treasury Bond quoted at 97:15 97+15/32= 97.46875 divide by 100 and multiple by 10,000 $9,746.88