* includes the 10% ( 10 % ) discount from the market price . expected volatilities are based on the historical price volatility on our publicly-traded class b shares . the expected dividend yield is based on the recent historical dividend yields for our stock , taking into account changes in dividend policy . the risk-free interest rate is based on the term structure of interest rates on u.s . treasury securities at the time of the option grant . the expected life represents the three month option period applicable to the purchase rights . note 12 . segment and geographic information we report our operations in three segments : u.s . domestic package operations , international package operations , and supply chain & freight operations . package operations represent our most significant business and are broken down into regional operations around the world . regional operations managers are responsible for both domestic and export operations within their geographic area . u.s . domestic package domestic package operations include the time-definite delivery of letters , documents , and packages throughout the united states . international package international package operations include delivery to more than 200 countries and territories worldwide , including shipments wholly outside the united states , as well as shipments with either origin or distribution outside the united states . our international package reporting segment includes the operations of our europe , asia , and americas operating segments . supply chain & freight supply chain & freight includes our forwarding and logistics operations , ups freight , and other aggregated business units . our forwarding and logistics business provides services in more than 175 countries and territories worldwide , and includes supply chain design and management , freight distribution , customs brokerage , mail and consulting services . ups freight offers a variety of ltl and tl services to customers in north america . other aggregated business units within this segment include mail boxes , etc . ( the franchisor of mail boxes , etc . and the ups store ) and ups capital. .
united parcel service , inc . and subsidiaries notes to consolidated financial statements 2014 ( continued ) ups class b common stock on the first or the last day of each quarterly period . employees purchased 1.8 , 1.9 , and 2.0 million shares at average prices of $ 64.20 , $ 66.64 , and $ 64.54 per share during 2007 , 2006 , and 2005 , respectively . compensation cost is measured for the fair value of employees 2019 purchase rights under our discounted employee stock purchase plan using the black-scholes option pricing model . the weighted average assumptions used and the calculated weighted average fair value of employees 2019 purchase rights granted , are as follows: .
what is the total cash inflow from the stock purchases of employees in 2007 , ( in millions ) ?
employees purchased 1.8 , 1.9 , and 2.0 million shares at average prices of $ 64.20 , $ 66.64 , and $ 64.54 per share during 2007 , 2006 , and 2005 , respectively .
2007 2006 2005
expected dividend yield 2.13% ( 2.13 % ) 1.79% ( 1.79 % ) 1.62% ( 1.62 % )
risk-free interest rate 4.60% ( 4.60 % ) 4.59% ( 4.59 % ) 2.84% ( 2.84 % )
expected life in years 0.25 0.25 0.25
expected volatility 16.26% ( 16.26 % ) 15.92% ( 15.92 % ) 15.46% ( 15.46 % )
weighted average fair value of purchase rights* $ 9.80 $ 10.30 $ 9.46