I have the following positions

a)
face - (118.000)
coupom - 12 3/8
maturity - 08/15/87
price on 02/05/86 - 106 5/32
price on 03/05/86 - 106 9/32

b)
face - 100.000
coupom - 11 5/8
maturity - 01/15/92
price on 02/05/86 - 112 12/32
price on 03/05/86 - 115 20/32

c)
face - (32.700)
coupom - 13 3/8
maturity - 08/15/01
price on 02/05/86 - 130 16/32
price on 03/05/86 - 141 14/32

the article says that the position was established on february 5, 1986 and sold on march 5 1986. It says that would have lost $650.000 during the period. How I calculate this?

Question

I have the following positions

a) 
face - (118.000)
coupom - 12 3/8
maturity - 08/15/87
price on 02/05/86 - 106 5/32
price on 03/05/86 - 106 9/32

b) 
face - 100.000
coupom - 11 5/8
maturity - 01/15/92
price on 02/05/86 - 112 12/32
price on 03/05/86 - 115 20/32

c) 
face - (32.700)
coupom - 13 3/8
maturity - 08/15/01
price on 02/05/86 - 130 16/32
price on 03/05/86 - 141 14/32

the article says that the position was established on february 5, 1986 and sold on march 5 1986. It says that would have lost $650.000 during the period. How I calculate this?