Mr. Clark is considering another bond, Bond D. It has a 8% semiannual coupon and a $1000 face value (i.e., it pays 40$ coupon every 6 months). Bond D is schedualed to mature in 9 years and has a price of $1150. It is also callable in 5 years with a call price of $1040. 1. What is the bonds nominal yield to maturity? 2. What is the bonds nomianl yield to call?

I see that people say to use

A	B	C	D	E	F
1
2
3		Face Value	1000
4		Coupon	8%
5		PMT	40
6		Years to maturity	9
7		Market Price	1150
8		Years to Call	5
9		Call Price	1040
10
11		1. YTM	5.83%	=RATE(C6*2,C5,-C7,C3)*2
12
13		2.YTC	5.26%	=RATE(C8*2,C5,-C7,C9)*2

But could someone please explain to me the formula? like the (C6*2, part I don't understand why there are commas in the formula please help so I can do it right so i can get the 5.83 and 5.26 myself thank you