i was able to solve this in excel (the numbers in red) but i need to know how to do it on a financial calculator- if you could show just the first 2 i think i could get the gist.

A C G 1 2 3 4 5 6 Firm 1 Firm 2 Firm 3 Firm 4 Firm 5 B YTM N 8% 3% 6.50% 2.10% 0.08% D E F Coupon Ra Face Value Issue Proceeds 15 7.00% 300000 274062 10 0.00% 750000 556853 10 5.00% 500000 468416 12 3.50% 1000000 1147822 20 2.00% 500000; 610688